Reorganize the tree for easier and better handling.

- Template helpers have been moved to templates/helpers.
- Documentation to docs/.
- Common scripts have been moved to utils/sh.
- Fixed install-destdir when executed via chroot.
- Added a build-pkg target that builds a binary package.
  The package must be installed into destdir before using.
- Misc tweaks and fixes.

--HG--
extra : convert_revision : 0896e8f24bb7592116aaf77ae9c776033818a3d8

templates/helpers/update-desktopdb.sh

@@ -0,0 +1,14 @@
+#
+# This helper update's desktop-file-utils desktop database for any
+# package that requests this operation.
+#
+
+update_desktopdb_cmd=$XBPS_MASTERDIR/bin/update-desktop-database
+desktopdb_dir=$XBPS_MASTERDIR/share/applications
+
+if [ -x $update_desktopdb_cmd -a -d $desktopdb_dir ]; then
+	$update_desktopdb_cmd $desktopdb_dir && \
+		echo "=> Updated desktop database directory."
+fi
+
+unset update_desktopdb_cmd desktopdb_dir