Add JSCGlib, the JavaScriptCore mini-port based on GLib.
Adjust CallFrame initialization for AAPCS ABI.
Remove the -fno-tree-dce flag. It's only causing issues on x86_64.
Use r4-r10 as registers to save in RegisterSet::calleeSaveRegisters() on ARMv6.
Correctly load the label addresses on ARMv6.
Add the ldlbl instruction.