Disable chromium thin archive build

Find 'alink_thin' in 'tools/gyp/pylib/gyp/generator/ninja.py' file, then remove 'T' option (rcsT -> rcs). After that build again and you can observe *.a files are much bigger than before. :-)

I have become a WebKit committer

This is really a late note. :-)

I have become a WebKit committer since 16 Feb 2013.
I already have got required support from reviewers last October then have system permission few days before.

Thanks WebKit!