PTH: Emitted tokens now consist of 12 bytes that are loaded used 3 32-bit...

PTH: Emitted tokens now consist of 12 bytes that are loaded used 3 32-bit loads.  This reduces user time but increases system time because of the slightly larger PTH file.  Although there is no performance win on Cocoa.h and -Eonly, overall this seems like a good step.

llvm-svn: 62542