First crack at adding a GYP_GENERATOR for determining various things

This version reads a file to get a list of input files, then outputs
if any of the input files are contained as sources (or inputs to
actions/rules) in any targets.

Patch by Scott Violet <>

Review URL:

git-svn-id: 78cadc50-ecff-11dd-a971-7dbc132099af
4 files changed