Implemented support for running triggers with binpkgs.

Also the following changes were made:
 * Added an info-files trigger, to (un)register info files.
 * xbps-base-dirs: it's responsible to install triggers on destdir.

--HG--
extra : convert_revision : 8d707053616f38d2b5beef7cf28e1bc4a66812b8

templates/texinfo/INSTALL

@@ -0,0 +1,31 @@
+#
+# This script registers all currently installed info files.
+#
+texinfo_files="info.info.gz info-stnd.info.gz texinfo.gz
+ texinfo-1.gz texinfo-2.gz texinfo-3.gz"
+
+case "$2" in
+pre)
+	;;
+post)
+	for file in $(find ./usr/share/info -type f ! -name dir); do
+		for i in ${texinfo_files}; do
+			if [ "$(basename ${file#.})" = "${i}" ]; then
+				found=1
+				break
+			fi
+		done
+		if [ -n "$found" ]; then
+			unset found
+			continue
+		fi
+		echo -n "Registering info file: ${file#.}... "
+		install-info $file ./usr/share/info/dir 2> /dev/null
+		if [ $? -eq 0 ]; then
+			echo "done."
+		else
+			echo "failed!"
+		fi
+	done
+	;;
+esac