Fix test/mac/gyptest-app.py with Xcode 4.2.

Xcode 4.2 got stricter about strings files. Make make and ninja stricter too.

BUG=chromium:175867
Review URL: https://codereview.chromium.org/12231007

git-svn-id: http://gyp.googlecode.com/svn/trunk@1573 78cadc50-ecff-11dd-a971-7dbc132099af
xcode: Add support for storyboard files

Patch from Amit Joshi <amit@chromium.org>!
Review URL: https://codereview.chromium.org/12213116/

git-svn-id: http://gyp.googlecode.com/svn/trunk@1574 78cadc50-ecff-11dd-a971-7dbc132099af
Detect all ninja's include dirs in Eclipse generator. 

The Eclipse generator assumed that SHARED_INTERMEDIATE_DIR was at 
out/ConfigName/obj/gen, which is true when using make. When using 
ninja, it's at out/ConfigName/gen. The Eclipse generator now lists 
include dirs in both locations, so it will work with either build 
systems. 

BUG=chromium:176031
TEST=Set up eclipse, import the include dirs and symbols generated by 
this generator, index everything, check that there aren't too many 
indexer errors.

Patch from Newton Allan <newt@chromium.org>!
Review URL: https://codereview.chromium.org/12220141/

git-svn-id: http://gyp.googlecode.com/svn/trunk@1575 78cadc50-ecff-11dd-a971-7dbc132099af