test-run.pl default_valgrind_args don't work with --massif

[Stewart Smith]

for the --massif option to test-run.pl to work, the following patch is needed:

=== modified file 'tests/test-run.pl'
--- tests/test-run.pl 2011-01-24 23:59:57 +0000
+++ tests/test-run.pl 2011-02-22 07:40:38 +0000
@@ -263,7 +263,7 @@ my $opt_valgrind= 0;
 my $opt_valgrind_drizzled= 0;
 my $opt_valgrind_drizzletest= 0;
 my $opt_valgrind_drizzleslap= 0;
-my @default_valgrind_args= ("--show-reachable=yes --malloc-fill=0xDEADBEEF --free-fill=0xDEADBEEF");
+my @default_valgrind_args;
 my @valgrind_args;
 my $opt_valgrind_path;
 my $opt_callgrind;

This makes it harder to do heap usage checking