(main): Reflect argument change for dump_setup.
* dump_setup.cc (dump_setup): Add preliminary extra argument for future use.
* path.cc (read_mounts): Open registry with read-only access.
* Makefile.in: Add info for dump_setup.o.
* cygcheck.cc (main): Recognize '-c' option for checking setup installed base.
* path.cc (cygpath): Read mount table if not loaded.
* path.cc: New file.
* cygcheck.cc (init_paths): Use MS-DOS path syntax.
(cygwin_info): Properly display cygwin version numbers. Prettify some output.
(dump_sysinfo): Calculate max names of posix and ms-dos paths for prettier
output.
