* Makefile.in: Make iniparse.y produce a c++ file.

* Makefile.in: Make iniparse.y produce a c++ file.
* choose.cc (set_existence): Revert 2001-05-27 change.
* ini.cc: Remove "C" from declaration of yyparse.
* iniparse.y (yyparse): Fill out version field by default when a binary install
is detected and no version has been set yet.
* install.cc (do_install): Mount things earlier so that we can use proper mount
table settings.  Don't remove mounts since they are now honored.
* mount.cc (create_mount): Reread the mount table after establishing a new
mount.
(read_mounts): Explicitly clear root_here to allow multiple uses of this
function.  Ensure that there is no garbage in the table when we've exhausted
all of the mounts in the registry.
(cygpath): Accomodate ./ in path.