[RP] poundbang

[Joshua Neuheisel]

By popular request:
http://neuheisel.us/ratpoison/patches/bang.patch.gz.

This small patch (against current CVS) allows RP to be used as an
interpreter, i.e. "ratpoison <filename>" will run "ratpoison -c" on each
line in <filename>.  In particular, one can now put "#!/path/to/ratpoison"
as the first line in an RP script and executing it will now Do The Right
Thing.

As an aside, this patch also fixed two gcc compile warnings regarding
type-punned variables.  A ChangeLog-compatible list of changes follow:
*src/actions.c (cmd_source): Rename read_rc_file and change prototype
*src/main.c (read_rc_file): Rename and change prototype.  Also, prune
leading whitespace.
(main): Added logic to handle script argument.
*src/ratpoison.h: Rename read_rc_file and change prototype
*src/events.c (receive_command): Changed prop_return type to avoid warnings
*src/manage.c (get_state): Changed data type to avoid warnings

Joshua