Reorg Makefile to allow more overrides on the make command line.
treefd01217ab6b487fd087089d8c94675b4f1a416ed
-rw-r--r-- 71 .gitignore
-rw-r--r-- 2928 COPYRIGHT
-rw-r--r-- 4814 Makefile
-rw-r--r-- 455 README
drwxr-xr-x - doc
drwxr-xr-x - dynasm
drwxr-xr-x - etc
drwxr-xr-x - lib
drwxr-xr-x - src