Bug 827995 - Avoid spending a lot of time in sprintf while assembling for ARM. r=bhackett, a=bajaj

During a profile of JS execution on B2G we're spending 10% of the time in
__vfprintf. At least some of this is in the arm assembler. Since we're not
actually using the strings we're printing we'd be better off not printing them.
Bug 822858 - Fix printing of lazy protos in type inference spew. r=bhackett, a=bajaj
Bug 822858. r=billm, a=bajaj
Bug 827591 - Be more careful changing declarations on page rules. r=dbaron, a=bajaj