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

triggers/info-files

@@ -0,0 +1,54 @@
+#!/bin/sh
+#
+# Registers or unregisters info files for a package.
+#
+# Arguments:	$1 = action [run/targets]
+#		$2 = target [post-install/pre-remove]
+#		$3 = pkgname
+#
+trigger="info-files"
+
+xbps_metadir="./var/db/xbps/metadata"
+finfometa="$xbps_metadir/$3/$trigger"
+installinfo="./usr/bin/install-info"
+infodir="./usr/share/info"
+
+case "$1" in
+targets)
+	echo "post-install pre-remove"
+	;;
+run)
+	[ ! -x $installinfo ] && exit 0
+
+	if [ ! -r $finfometa ]; then
+		echo "$trigger: can't find info-files in metadata directory!"
+		exit 1
+	fi
+
+	cat $finfometa | while read line; do
+		[ ! -f ./$line ] && continue
+
+		case "$2" in
+		post-install)
+			echo -n "Registering info file: $line... "
+			;;
+		pre-remove)
+			echo -n "Unregistering info file: $line... "
+			infoargs="--delete"
+			;;
+		esac
+
+		$installinfo $infoargs ./$line $infodir/dir 2>/dev/null
+		if [ $? -eq 0 ]; then
+			echo "done."
+		else
+			echo "failed!"
+		fi
+	done
+	;;
+*)
+	exit 1
+	;;
+esac
+
+exit 0