added *option* to use MCJIT turned off though

MCJIT currently doesn't support lazy compilation
this is a complete deal breaker for extempore
and until such time as it *does* support lazy
compilation then it's a non starter.
Merge branch 'llvm32' of github.com:digego/extempore into llvm32
Merge remote-tracking branch 'refs/remotes/origin/llvm32' into llvm32
Merge remote-tracking branch 'remotes/origin/llvm32' into llvm32

Conflicts:
	src/EXTLLVM.cpp