Remove magic quotes

Summary: It has beeen removed since PHP5.4
Closes https://github.com/facebook/hhvm/pull/4203

Reviewed By: @JoelMarcey

Differential Revision: D1669988

Signature: t1:1669988:1415843237:56b2bb711980d9d2e356a5e2799be290f975a155
Break regions after FCall & friends when using LLVM

Summary: When using the LLVM backend, we're going to break regions after
bytecodes that use bindcall or something similar. This is intended to be
temporary and for reasons too lengthy to go into here. I also cleaned things up
a little so we actually obey the intent of the EvalJitLLVM runtime option: 1
means Optimize translations only, while >1 means all translations.

Reviewed By: @jasone

Differential Revision: D1671586

Signature: t1:1671586:1415671170:c540b409c2d27aff6d9f00723a3d0e17fceb9e6e