[webkit-reviews] review requested: [Bug 7923] WebKit no longer builds with bison 2.1 : [Attachment 7242] Use the same approach that the .y build rule in JavaScriptCore Xcode project uses to handle Bison 1.28 + 2.1

[bugzilla-request-daemon at opendarwin.org]

Mark Rowe (bdash) <opendarwin.org at bdash.net.nz> has asked  for review:
Bug 7923: WebKit no longer builds with bison 2.1
http://bugzilla.opendarwin.org/show_bug.cgi?id=7923

Attachment 7242: Use the same approach that the .y build rule in JavaScriptCore
Xcode project uses to handle Bison 1.28 + 2.1
http://bugzilla.opendarwin.org/attachment.cgi?id=7242&action=edit