Major infrastructure changes, part 2.

* Moved helpers, common and triggers dirs into xbps-src, where
  they belong.
* Renamed the templates dir to srcpkgs, it was so redundant before.
* Make it possible to add subpkgs with no restriction in names, for
  example udev now has a subpkgs called "libgudev". Previously
  subpkgs were named "${sourcepkg}-${pkgname}".
* xbps-src: changed to look for template files in current directory.
  That means that most arguments from the targets have been removed.
* xbps-src: added a reinstall target, to remove + install.
* xbps-src: do not overwrite binpkgs by default, skip them.

And more that I forgot because it's a mega-commit that I've been
working for some days already...

--HG--
extra : convert_revision : 0f466878584d1e6895d2a234f07ea1b2d1e61b3e

xbps-src/shutils/Makefile

@@ -8,14 +8,9 @@ clean:
 
 .PHONY: install
 install:
-	if [ ! -d $(DESTDIR)$(SHAREDIR) ]; then		\
-		install -d $(DESTDIR)$(SHAREDIR);	\
-	fi
-
-	for f in *.sh; do					\
-		install -m 755 $$f $(DESTDIR)$(SHAREDIR);	\
-	done
+	install -d $(DESTDIR)$(SHAREDIR)/shutils
+	install -m 644 *.sh $(DESTDIR)$(SHAREDIR)/shutils
 
 .PHONY: uninstall
 uninstall:
-	-rm -rf $(DESTDIR)$(SHAREDIR)
+	-rm -rf $(DESTDIR)$(SHAREDIR)/shutils