Added support for shell (and csh as well) patterns for required

dependencies, as specified in blueprint "improved-version-matching".

It's possible now to require greater, greater or equal than,
less, less or equal than, and equal pkg versions, as well as using
'{}' and '[^!]' csh patterns in dependencies.

Code lifted from FreeBSD, thanks! :-)

Change XBPS_RELVER to 20091107 to match latest additions.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20091107035620-3051wcwrirqn2g14

bin/xbps-bin/check.c

@@ -264,7 +264,7 @@ xbps_check_pkg_integrity(const char *pkgname)
 		}
 		while ((obj = prop_object_iterator_next(iter))) {
 			reqpkg = prop_string_cstring_nocopy(obj);
-			if (xbps_check_is_installed_pkg(reqpkg) < 0) {
+			if (xbps_check_is_installed_pkg(reqpkg) <= 0) {
 				rv = ENOENT;
 				printf("%s: dependency not satisfied: %s\n",
 				    pkgname, reqpkg);