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

lib/sortdeps.c

@@ -62,7 +62,7 @@ xbps_sort_pkg_deps(prop_dictionary_t chaindeps)
 	prop_object_iterator_t iter, iter2;
 	struct sorted_dependency *sdep;
 	size_t ndeps = 0, rundepscnt = 0, cnt = 0;
-	const char *pkgname;
+	const char *pkgname, *str;
 	char *curpkgnamedep;
 	int rv = 0;
 
@@ -125,8 +125,8 @@ again:
 		 * were already added in the sorted list.
 		 */
 		while ((obj2 = prop_object_iterator_next(iter2)) != NULL) {
-			curpkgnamedep =
-			    xbps_get_pkg_name(prop_string_cstring_nocopy(obj2));
+			str = prop_string_cstring_nocopy(obj2);
+			curpkgnamedep = xbps_get_pkgdep_name(str);
 			/*
 			 * If dependency is already installed or queued,
 			 * pass to the next one.