gitdirstate: show pattern error in hgignore file as expected Before this revision, invalid pattern in hgignore file causes unintentional failure for UnboundLocalError of ignorefunc, if hggit is used with Mercurial 3.5 or later. In such case: - checking source of invalid pattern at failure uses "pats" list for hgignore files, but - "pats" list is empty, if ignoremod is None (= Mercurial 3.5 or later) - therefore, checking with matchmod.match() overlooks invalid pattern Then, "return ignorefunc" is executed without assignment to ignorefunc, and causes UnboundLocalError. To show pattern error in hgignore file as expected even with Mercurial 3.5 or later, this revision puts '(FILE, ["include: FILE"])' tuples into "pats" (to avoid code duplication, putting into allpats is shared, too). This makes checking source of invalid pattern at failure work as expected for hgignore files. Fixes #197