Adapt massif mmapunmap test to handle ppc64 backtrace

The reported backtrace on ppc64 platform reports "generic_start_main.isra.0"
in the backtrace, where other platforms typically see "main".  Adjust the
vgtest file to handle this variation.  This is similar to existing changes
as seen in deep-D.post.exp

FORGOT to add the file massif/tests/mmapunmap.post.exp-ppc64 before doing
commit 15950.

Bugzilla 368461

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15955

diff --git a/massif/tests/mmapunmap.post.exp-ppc64 b/massif/tests/mmapunmap.post.exp-ppc64
new file mode 100644 (file)
index 0000000..59550a3
--- /dev/null
+++ b/massif/tests/mmapunmap.post.exp-ppc64
@@ -0,0 +1 @@
+ n1: 81920000 0x........: generic_start_main.isra.0 (in /...libc...)