patman: Update to use absolute imports

diff --git a/tools/patman/checkpatch.py b/tools/patman/checkpatch.py
index d47ea438b7..795b519314 100644
--- a/tools/patman/checkpatch.py
+++ b/tools/patman/checkpatch.py
@@ -3,12 +3,14 @@ 
 #
 
 import collections
-import command
-import gitutil
 import os
 import re
 import sys
-import terminal
+
+from patman import command
+from patman import gitutil
+from patman import terminal
+from patman import tools
 
 def FindCheckPatch():
     top_level = gitutil.GetTopLevel()
diff --git a/tools/patman/command.py b/tools/patman/command.py
index 5fbd2c4a3e..e67ac159e5 100644
--- a/tools/patman/command.py
+++ b/tools/patman/command.py
@@ -3,8 +3,9 @@ 
 #
 
 import os
-import cros_subprocess
-import tools
+
+from patman import cros_subprocess
+from patman import tools
 
 """Shell command ease-ups for Python."""
 
diff --git a/tools/patman/func_test.py b/tools/patman/func_test.py
index 76319fff37..b8dee18725 100644
--- a/tools/patman/func_test.py
+++ b/tools/patman/func_test.py
@@ -17,10 +17,10 @@  try:
 except ImportError:
     from io import StringIO
 
-import gitutil
-import patchstream
-import settings
-import tools
+from patman import gitutil
+from patman import patchstream
+from patman import settings
+from patman import tools
 
 
 @contextlib.contextmanager
diff --git a/tools/patman/get_maintainer.py b/tools/patman/get_maintainer.py
index 0ffb55a821..473f0feebf 100644
--- a/tools/patman/get_maintainer.py
+++ b/tools/patman/get_maintainer.py
@@ -2,10 +2,11 @@ 
 # Copyright (c) 2012 The Chromium OS Authors.
 #
 
-import command
-import gitutil
 import os
 
+from patman import command
+from patman import gitutil
+
 def FindGetMaintainer():
     """Look for the get_maintainer.pl script.
 
diff --git a/tools/patman/gitutil.py b/tools/patman/gitutil.py
index a2a225c6b9..770a051014 100644
--- a/tools/patman/gitutil.py
+++ b/tools/patman/gitutil.py
@@ -2,17 +2,17 @@ 
 # Copyright (c) 2011 The Chromium OS Authors.
 #
 
-import command
 import re
 import os
-import series
 import subprocess
 import sys
-import terminal
 
-import checkpatch
-import settings
-import tools
+from patman import checkpatch
+from patman import command
+from patman import series
+from patman import settings
+from patman import terminal
+from patman import tools
 
 # True to use --no-decorate - we check this in Setup()
 use_no_decorate = True
diff --git a/tools/patman/patman.py b/tools/patman/main.py
similarity index 93%
rename from tools/patman/patman.py
rename to tools/patman/main.py
index cf53e532dd..8cce567c6e 100755
--- a/tools/patman/patman.py
+++ b/tools/patman/main.py
@@ -12,19 +12,20 @@  import re
 import sys
 import unittest
 
+if __name__ == "__main__":
+    # Allow 'from patman import xxx to work'
+    our_path = os.path.dirname(os.path.realpath(__file__))
+    sys.path.append(os.path.join(our_path, '..'))
+
 # Our modules
-try:
-    from patman import checkpatch, command, gitutil, patchstream, \
-        project, settings, terminal, test
-except ImportError:
-    import checkpatch
-    import command
-    import gitutil
-    import patchstream
-    import project
-    import settings
-    import terminal
-    import test
+from patman import checkpatch
+from patman import command
+from patman import gitutil
+from patman import patchstream
+from patman import project
+from patman import settings
+from patman import terminal
+from patman import test
 
 
 parser = OptionParser()
@@ -85,7 +86,7 @@  if __name__ != "__main__":
 # Run our meagre tests
 elif options.test:
     import doctest
-    import func_test
+    from patman import func_test
 
     sys.argv = [sys.argv[0]]
     result = unittest.TestResult()
diff --git a/tools/patman/patchstream.py b/tools/patman/patchstream.py
index df3eb7483b..405297505c 100644
--- a/tools/patman/patchstream.py
+++ b/tools/patman/patchstream.py
@@ -9,10 +9,10 @@  import re
 import shutil
 import tempfile
 
-import command
-import commit
-import gitutil
-from series import Series
+from patman import command
+from patman import commit
+from patman import gitutil
+from patman.series import Series
 
 # Tags that we detect and remove
 re_remove = re.compile('^BUG=|^TEST=|^BRANCH=|^Review URL:'
diff --git a/tools/patman/patman b/tools/patman/patman
index 6cc3d7a56a..11a5d8e18a 120000
--- a/tools/patman/patman
+++ b/tools/patman/patman
@@ -1 +1 @@ 
-patman.py
\ No newline at end of file
+main.py
\ No newline at end of file
diff --git a/tools/patman/project.py b/tools/patman/project.py
index 1d9cfc0625..2dfc303729 100644
--- a/tools/patman/project.py
+++ b/tools/patman/project.py
@@ -4,7 +4,7 @@ 
 
 import os.path
 
-import gitutil
+from patman import gitutil
 
 def DetectProject():
     """Autodetect the name of the current project.
diff --git a/tools/patman/series.py b/tools/patman/series.py
index a15f7625ed..9baf5ce976 100644
--- a/tools/patman/series.py
+++ b/tools/patman/series.py
@@ -7,11 +7,11 @@  from __future__ import print_function
 import itertools
 import os
 
-import get_maintainer
-import gitutil
-import settings
-import terminal
-import tools
+from patman import get_maintainer
+from patman import gitutil
+from patman import settings
+from patman import terminal
+from patman import tools
 
 # Series-xxx tags that we understand
 valid_series = ['to', 'cc', 'version', 'changes', 'prefix', 'notes', 'name',
diff --git a/tools/patman/settings.py b/tools/patman/settings.py
index 5dc83a8500..8acfb92c09 100644
--- a/tools/patman/settings.py
+++ b/tools/patman/settings.py
@@ -12,9 +12,9 @@  except:
 import os
 import re
 
-import command
-import gitutil
-import tools
+from patman import command
+from patman import gitutil
+from patman import tools
 
 """Default settings per-project.
 
diff --git a/tools/patman/test.py b/tools/patman/test.py
index 889e186606..e7f709e34c 100644
--- a/tools/patman/test.py
+++ b/tools/patman/test.py
@@ -8,11 +8,11 @@  import os
 import tempfile
 import unittest
 
-import checkpatch
-import gitutil
-import patchstream
-import series
-import commit
+from patman import checkpatch
+from patman import gitutil
+from patman import patchstream
+from patman import series
+from patman import commit
 
 
 class TestPatch(unittest.TestCase):
diff --git a/tools/patman/tools.py b/tools/patman/tools.py
index 3feddb292f..7b0840d5c3 100644
--- a/tools/patman/tools.py
+++ b/tools/patman/tools.py
@@ -5,7 +5,6 @@ 
 
 from __future__ import print_function
 
-import command
 import glob
 import os
 import shutil
@@ -13,7 +12,8 @@  import struct
 import sys
 import tempfile
 
-import tout
+from patman import command
+from patman import tout
 
 # Output directly (generally this is temporary)
 outdir = None
diff --git a/tools/patman/tout.py b/tools/patman/tout.py
index 2a384851b0..834d4f4db7 100644
--- a/tools/patman/tout.py
+++ b/tools/patman/tout.py
@@ -8,7 +8,7 @@  from __future__ import print_function
 
 import sys
 
-import terminal
+from patman import terminal
 
 # Output verbosity levels that we support
 ERROR, WARNING, NOTICE, INFO, DETAIL, DEBUG = range(6)