Use basename instead of a regular expression in argv[0] check.
tree48c76abab02d1a3357c9d500ff53c088ff6053d6
-rw-r--r-- 18009 COPYING
-rw-r--r-- 480 Makefile
-rw-r--r-- 1039 README
-rwxr-xr-x 1513 buildMain.py
-rw-r--r-- 1488 ctcore.py
-rw-r--r-- 4121 git.py
-rw-r--r-- 1994 hg.py
-rwxr-xr-x 13965 main.py
-rw-r--r-- 40956 mysubprocess.py