cygcheck wihtout package checking if they are unavailable.
* dump_setup.cc: Generate dummy zlib macros when zlib is not available.
(open_package_list): Use zlib functions to uncompress package lists. Return
gzFile rather than FILE *.
(check_package_files): Change fp to gzFile to accommodate zlib functions. Use
gzgets to read from package file. Use gzclose to close the handle.
(package_list): Ditto.
(package_find): Ditto.
* cygcheck.cc (find_package,list_package): New global
variables.
(usage): Add "--find-package" and "--list-package" options,
reformat output.
(longopts, opts): Add "--find-package" and "--list-package"
options.
(main): Process the "--find-package" and "--list-package"
flags. Add new semantic checks. Add calls to find_package()
and list_package().
* dump_setup.cc: Fix header comment.
(match_argv): Change return type to int to distinguish
between real matches and default ones.
(open_package_list): New static function.
(check_package_files): Factor out opening the package list
file into open_package_list().
(get_packages): New static function.
(dump_setup): Factor out getting a list of packages into
get_packages().
(package_list, package_find): New global functions.
(could_not_access,directory_exists): New static function.
(file_exists): Ditto.
(check_package_files): Ditto.
(dump_setup): Check the contents of each package if check_files is true and
output the result in the "Status" column. Flush output after each package.
* dump_setup.cc (dump_setup): Remove redundant null check. Add informative
message if package info not found.
(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.
