Stopped stringifying references to literals. Using references to their promises instead

Hello nicks, eford1, 

Please review the following commits I made in branch 'azulus-compilerCache'.

3e0b5dd38fb84dc9d409146c39e758284b2c3fdb (2013-05-21 15:35:08 -0700)
Applying changes

R=nicks
R=eford1