Simplify protobuf/protobuf.gyp (part 2)

This is a follow up CL for r442, but is still just an internal fix/clean-up for warnings settings in build time.  No behvior change is intended.  Basically this CL does:
- Fix indentation.
- Fix wrong conditoins in compiler-dependent warning rules.
- Fix a compiler option name to suppress unknown options.  It should heen '-Wno-unknown-warning-option', not '-Wno-unknown-warning'.
- Remove a redundant 'xcode_settings', whose settings are now coverted in a more platform agnostic way.

BUG=none
TEST=unittest

git-svn-id: https://mozc.googlecode.com/svn/trunk@443 a6090854-d499-a067-5803-1114d4e51264
2 files changed
tree: f56896d31e060673ee66daafd302d7f87f5b9928
  1. src/