update broken PKG_UPDATE rules, handle missing update rules * Makefile.in: add handling for packages with no update rule * src/gtk2.mk, src/gtk3.mk, src/libvpx.mk, src/taglib.mk, src/hunspell.mk, src/vala.mk : use github tags for version info * src/llvm.mk: add '?' to update url * src/openscenegraph.mk: update SED rule for version extraction * src/pthread-stubs.mk, src/qt5.mk, src/renderproto.mk, src/sm.mk, src/s2tc.mk, src/util-macros.mk: added dummy PKG_UPDATE rule * src/qscintilla.mk: change search name for version extraction * src/qtbase.mk: use short pkg version in update path * src/suitesparse.mk: update change in main url/version url * src/tre.mk: update download page link * src/vmime.mk: update download and update url * src/wget.mk, src/xapian-core.mk: update url, sed rule * src/wt.mk: update to use github download/update * src/src-msys-libcrypt.mk: update sed rule

--- a/src/qtbase.mk	Wed Mar 07 06:44:54 2018 -0500
+++ b/src/qtbase.mk	Fri Mar 09 11:46:42 2018 -0500
@@ -40,7 +40,7 @@
 endif
 
 define $(PKG)_UPDATE
-    $(WGET) -q -O- http://download.qt-project.org/official_releases/qt/5.5/ | \
+    $(WGET) -q -O- http://download.qt-project.org/official_releases/qt/$(call SHORT_PKG_VERSION,$(PKG))/ | \
     $(SED) -n 's,.*href="\(5\.[0-9]\.[^/]*\)/".*,\1,p' | \
     grep -iv -- '-rc' | \
     sort |