LP #1610858: Some MTR tests cause server kill on shutdown with Valgrind

**Reported in Launchpad by Laurynas Biveinis last update 17-08-2016 07:17:47

innodb.percona_changed_page_bmp_requests w4 [ fail ]
...
— /mnt/workspace/percona-server-5.5-valgrind/BUILD_TYPE/valgrind/Host/ubuntu-xenial-32bit/mysql-test/suite/innodb/r/percona_changed_page_bmp_requests.result 2016-08-05 07:24:41.528704105 +0300
+++ /mnt/workspace/percona-server-5.5-valgrind/BUILD_TYPE/valgrind/Host/ubuntu-xenial-32bit/mysql-test/suite/innodb/r/percona_changed_page_bmp_requests.reject 2016-08-05 16:11:47.046585712 +0300
@@ -52,6 +52,7 @@
PURGE CHANGED_PAGE_BITMAPS BEFORE 100000000;
ERROR 42000: Access denied; you need (at least one of) the SUPER privilege(s) for this operation
DROP USER mysqltest_1@localhost;
+shutdown_server timeout 10 exceeded, SIGKILL sent to the server
SELECT @@GLOBAL.innodb_track_changed_pages;
@@GLOBAL.innodb_track_changed_pages
0
@@ -72,6 +73,7 @@
After the repeated PURGE:
ib_modified_log_5
INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
+shutdown_server timeout 10 exceeded, SIGKILL sent to the server
Before the RESET while tracking disabled:
ib_modified_log_1
ib_modified_log_2

mysqltest: Result content mismatch
...
sys_vars.innodb_flush_neighbor_pages_startup w1 [ fail ]
...
@@ -4,6 +4,7 @@
SELECT @@GLOBAL.innodb_flush_neighbor_pages;
@@GLOBAL.innodb_flush_neighbor_pages
area
+shutdown_server timeout 10 exceeded, SIGKILL sent to the server
SELECT @@GLOBAL.innodb_flush_neighbor_pages;
@@GLOBAL.innodb_flush_neighbor_pages
cont

mysqltest: Result content mismatch
...
sys_vars.innodb_adaptive_flushing_method_startup w4 [ fail ]
...
@@ -1,3 +1,4 @@
+shutdown_server timeout 10 exceeded, SIGKILL sent to the server
SELECT @@GLOBAL.innodb_adaptive_flushing_method;
@@GLOBAL.innodb_adaptive_flushing_method
native
@@ -13,6 +14,7 @@
SELECT @@GLOBAL.innodb_adaptive_flushing_method;
@@GLOBAL.innodb_adaptive_flushing_method
estimate
+shutdown_server timeout 10 exceeded, SIGKILL sent to the server
SELECT @@GLOBAL.innodb_adaptive_flushing_method;
@@GLOBAL.innodb_adaptive_flushing_method
keep_average

mysqltest: Result content mismatch