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/triggers/x11-fonts

@@ -0,0 +1,58 @@
+#!/bin/sh
+#
+# This trigger rebuilds the fonts.dir and fonts.scale files
+# for packages that install X11 fonts, and update fontconfig's
+# cache for those fonts.
+#
+# Arguments:	$1 = action [run/targets]
+#		$2 = target [post-install/pre-remove]
+#		$3 = pkgname
+#
+mkfontdir=usr/bin/mkfontdir
+mkfontscale=usr/bin/mkfontscale
+fccache=usr/bin/fc-cache
+
+case "$1" in
+targets)
+	echo "post-install pre-remove"
+	;;
+run)
+	if [ ! -x ${mkfontdir} -a ! -x ${mkfontscale} ]; then
+		exit 0
+	fi
+
+	[ -z "${font_dirs}" ] && exit 0
+
+	case "$2" in
+	post-install)
+		for dir in ${font_dirs}; do
+			echo "Building ${dir}/fonts.dir..."
+			${mkfontdir} .${dir} || exit $?
+			echo "Building ${dir}/fonts.scale..."
+			${mkfontscale} .${dir} || exit $?
+			echo "Updating fontconfig's cache..."
+			${fccache} .${dir} 2>/dev/null
+		done
+		;;
+	pre-remove)
+		for dir in ${font_dirs}; do
+			if [ -f .${dir}/fonts.dir ]; then
+				rm -f .${dir}/fonts.dir
+			fi
+			if [ -f .${dir}/fonts.scale ]; then
+				rm -f .${dir}/fonts.scale
+			fi
+			if [ -f .${dir}/encodings.dir ]; then
+				rm -f .${dir}/encodings.dir
+			fi
+		done
+		;;
+	esac
+
+	;;
+*)
+	exit 1
+	;;
+esac
+
+exit 0