Dex for Windows: Support paths with spaces.

1- Change the format of the command line parsed by dx.jar.
Parameters with values are usually specified with one
single argument e.g.
   --output=/some/path with spaces
That breaks for a variety of reasons on windows, so the first
step is to allow a new 2-parameter form:
   --output "/some/path with spaces"

2- The next step is fixing the way the dx.bat wrapper
extracts the -J parameters to be able to cope with
arguments that contain spaces.

SDK bugs: 4567, 18388

Change-Id: Ia837e7307998c0bf41ae39abb36abebfc27da104
2 files changed