Support Mac android cross compile.

pylib/gyp/common.py

Index: pylib/gyp/common.py
===================================================================
--- pylib/gyp/common.py	(revision 1416)
+++ pylib/gyp/common.py	(working copy)
@@ -360,6 +360,9 @@
   flavor = flavors.get(sys.platform, 'linux')
   return params.get('flavor', flavor)
 
+def GetHostOSFlavor():

[Torne, 2012/08/01 11:20:32]

Probably better called GetHostFlavor() (and the various variables that contain
it, host_flavor) throughout; having the host described as an OS and the target
described as a flavor is potentially misleading.

+  """Returns | GetFlavor default avoiding override of params.flavor """
+  return GetFlavor({})

[Torne, 2012/08/01 11:20:32]

There probably needs to be a way to set this in params too, just not using
params.flavor - in case the platform detection logic in GetFlavor isn't working
for someone. New command line argument/environment variable, probably?

 
 def CopyTool(flavor, out_path):
   """Finds (mac|sun|win)_tool.gyp in the gyp directory and copies it