moved of_g to c_gen.of_g_legacy, introduced loxi_globals
as of_g includes loads of legacy data (and a representation that
is increasingly tailored to the c backend only), I've moved it to
c_gen.of_g. In its place, I have created loxi_globals, which gives
access to the list of versions and the IR.
Also loxi reorg: move command line processing to cmdline.py
diff --git a/c_gen/c_show_gen.py b/c_gen/c_show_gen.py
index fe3e3dc..fc3edb8 100644
--- a/c_gen/c_show_gen.py
+++ b/c_gen/c_show_gen.py
@@ -33,7 +33,7 @@
"""
import sys
-import of_g
+import c_gen.of_g_legacy as of_g
import c_gen.match as match
import c_gen.flags as flags
from generic_utils import *