Currently, preparser-process crashes when given flags with arguments (e.g. --gc_interval 10). It can be fixed by ignoring everything in the command line except the "throws" command and its immediate arguments. This assumes that no flags appear between "throws" and its arguments.

TEST=make ia32.release.check TESTFLAGS="preparser --special-command=\"@ --gc_interval 10\""

Review URL: http://codereview.chromium.org/8268004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9617 ce2b1a6d-e550-0410-aec6-3dcde31c8c00