[mutter] Add .AUTOPARALLEL flag to Makefile

[Colin Walters <walters src gnome org>]

commit e83c24c91b146aa0e18b837ea710ad7fb79111cf
Author: Colin Walters <walters verbum org>
Date:   Sun Aug 30 20:21:02 2009 -0400

    Add .AUTOPARALLEL flag to Makefile
    
    This automatically enables parallelism with the patched make,
    and flags us as maintaining a parallel build.

 src/Makefile.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 5c70cab..03f470b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,3 +1,6 @@
+# Flag build for parallelism; see https://savannah.gnu.org/patch/?6905
+.AUTOPARALLEL:
+
 lib_LTLIBRARIES = libmutter-private.la
 
 SUBDIRS=wm-tester tools compositor/plugins