df_args may come with parameter attributes.
Implemented gc.
Fixed missing fields in function definition printing.
Rennaming llvmocp into ollvm.
Imported "Ez" interface from "llvm-ocp-ez".
Added modul printing method.
Imported (incomplete) tollvm module: convert an ollvm ast into
a llvm module using llvm api bindings.
Added autonconf files skeletons.
Added ollvm.mli + added Ez module to library interface.
Renammed tollvm to llvmgateway. Added ollvm_llvmgateway
 building rule in build.ocp
Merge branch 'master' into test

DOES NOT COMPILE. Problem while linking ollvm lib.

Fixed conflicts:
	build.ocp