Create separate Android.mk for main build targets

The runtime, compiler, dex2oat, and oatdump now are in seperate trees
to prevent dependency creep.  They can now be individually built
without rebuilding the rest of the art projects. dalvikvm and jdwpspy
were already this way. Builds in the art directory should behave as
before, building everything including tests.

Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81
diff --git a/tools/generate-operator-out.py b/tools/generate-operator-out.py
index aa0c00e..678e664 100755
--- a/tools/generate-operator-out.py
+++ b/tools/generate-operator-out.py
@@ -158,8 +158,9 @@
     _ENUMS[enum_name].append((enum_value, enum_text))
 
 def main():
+  local_path = sys.argv[1]
   header_files = []
-  for header_file in sys.argv[1:]:
+  for header_file in sys.argv[2:]:
     header_files.append(header_file)
     ProcessFile(header_file)
 
@@ -167,9 +168,7 @@
   print
 
   for header_file in header_files:
-    # Make gives us paths relative to the top of the tree, but our -I is art/.
-    # We also have -I art/src/, but icu4c is higher on the include path and has a "mutex.h" too.
-    header_file = header_file.replace('art/', '')
+    header_file = header_file.replace(local_path + '/', '')
     print '#include "%s"' % header_file
 
   print