more FFI work.
more FFI work.

cmem datatype.
parse-ctype: 'int' to signed integer of word size.
parse-spec: take info object as arg.
parse-includes: C backend needs to know which include files to add.
require-ffi: keep track of loaded interfaces.
cref: a start on a macro for lvalues.
build-ffi-fun:
build-ffi-ob-get:
build-ffi-ob-set:
  macros that expand autoffi code for each backend.

samrushing/irken-compiler,samrushing/irken-compiler,samrushing/irken-compiler,samrushing/irken-compiler