xbps-src: cleanups for -E and -t.

-E also detect noarch binpkgs.
-t make sure to cleanup the temporary masterdirs.

common/xbps-src/shutils/pkgtarget.sh

@@ -116,12 +116,11 @@ install_pkg() {
     if [ "$XBPS_TARGET_PKG" = "$sourcepkg" ]; then
         if [ "$XBPS_TARGET" = "bootstrap" ]; then
             return 0
-        else
-            # Package built successfully. Exit directly due to nested install_pkg
-            # and install_pkg_deps functions.
-            remove_cross_pkg $cross
-            exit 0
         fi
+        # Package built successfully. Exit directly due to nested install_pkg
+        # and install_pkg_deps functions.
+        remove_cross_pkg $cross
+        exit_and_cleanup
     fi
 }