Provide some vars for use in template's targets.

These new vars are DESTDIR (by default XBPS_DESTDIR/pkgname-version),
SRCPKGDESTDIR (XBPS_DESTDIR/sourcepkg-version) and FILESDIR
(XBPS_TEMPLATESDIR/pkgname/files).

This simplifies packages that used them.

--HG--
extra : convert_revision : 287ea7128cb5df19870ca7aff0a3b8f99a11d63a

templates/cracklib-words/template

@@ -14,8 +14,7 @@ long_desc="
 
 do_install()
 {
-	local destdir=$XBPS_DESTDIR/$pkgname-$version
-
-	install -d $destdir/usr/share/dict
-	install $wrksrc/$pkgname-${words_date} $destdir/usr/share/dict/$pkgname
+	install -d ${DESTDIR}/usr/share/dict
+	install $wrksrc/$pkgname-${words_date} \
+		${DESTDIR}/usr/share/dict/${pkgname}
 }