templater: enable alias predicates to be used in "revset()" function Before this patch, predicates defined in "[revsetalias]" can't be used in the query specified to template function "revset()", because: - "revset()" uses "localrepository.revs()" to get query result, but - "localrepository.revs()" passes "None" as "ui" to "revset.match()", then - "revset.match()" can't recognize any alias predicates To enable alias predicates to be used in "revset()" function, this patch invokes "revset.match()" directly with "repo.ui". This patch doesn't make "localrepository.revs()" pass "self.ui" to "revset.match()", because this may be intentional implementation to prevent alias predicates from shadowing built-in ones and breaking functions internally using "localrepository.revs()". Even if it isn't intentional one, the check for shadowing should be implemented (maybe on default branch) before fixing it for safety.