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New version (7) attached which does the right thing for
"python -tt -m regrtest -u network". (I really like that
test case btw - very concise)

This one sets argv[0] correctly, but was initially a little
ungraceful in some failure modes (such as "python -m
parser"). I had to add a new private API function to
import.h (_PyImport_IsScript) to clean that up.

Examples of the error handling in this version:

[...@localhost src]$ ./python -m foo
./python: module foo not found
[...@localhost src]$ ./python -m sys
./python: module sys has no associated file
[...@localhost src]$ ./python -m parser
./python: module parser not usable as script
 
(/home/.../dev/python/dist/src/build/lib.linux-i686-2.4/parser.so)