tests: update our Valgrind suppression files

* build-aux/linux-gnu.valgrind, build-aux/darwin11.4.0.valgrind: Rename as...
* build-aux/Linux.valgrind, build-aux/Darwin.valgrind: these.
* build-aux/Linux.valgrind: Add suppression clause.
* configure.ac: Update.
* tests/local.mk: Use it.

build-aux/Darwin.valgrind

@@ -0,0 +1,64 @@
+# Copyright (C) 2012-2015 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Valgrind suppression file for Bison.
+
+{
+   Mac OS X initialization
+   Memcheck:Leak
+   fun:?alloc*
+   ...
+   fun:*ImageLoader*
+}
+
+{
+   Mac OS X initialization
+   Memcheck:Leak
+   fun:?alloc*
+   ...
+   fun:*dyld*
+}
+
+{
+   Mac OS X initialization
+   Memcheck:Leak
+   fun:?alloc*
+   ...
+   fun:__CFInitialize
+}
+
+{
+   Mac OS X I/O buffer
+   Memcheck:Leak
+   fun:malloc
+   fun:__smakebuf
+   fun:__swsetup
+   fun:__sfvwrite
+   fun:fwrite
+}
+
+{
+   Mac OS X I/O buffer
+   Memcheck:Leak
+   fun:malloc
+   fun:__smakebuf
+   fun:__swsetup
+   fun:__swbuf
+   fun:putchar
+}
+
+# Local Variables:
+# mode: shell-script
+# End: