Some tests can take very long time when run with valgrind

Set tests to non-valgrind:
  oqgraph.social
  encryption.innodb-page_encryption
  binlog_encryption.encrypted_master
  innodb.innodb-page_compression_lz4
  main.lock_multi_bug38499
  main.lock_multi_bug38691

mysql-test/suite/binlog_encryption/encrypted_master.test

@@ -18,6 +18,9 @@
 # - with annotated events, default checksums and minimal binlog row image
 #
 
+# The test can take very long time with valgrind
+--source include/not_valgrind.inc
+
 --source include/have_partition.inc
 --source encryption_algorithms.inc
 --source include/have_innodb.inc

mysql-test/suite/encryption/t/innodb-page_encryption.test

 -- source include/have_innodb.inc
 -- source include/have_file_key_management_plugin.inc
 
+# The test can take very long time with valgrind
+--source include/not_valgrind.inc
+
 create table innodb_normal(c1 bigint not null, b char(200)) engine=innodb;
 show warnings;
 create table innodb_compact(c1 bigint not null, b char(200)) engine=innodb row_format=compact encrypted=yes encryption_key_id=1;

mysql-test/suite/innodb/t/innodb-page_compression_lz4.test

 -- source include/have_innodb.inc
 -- source include/have_innodb_lz4.inc
 -- source include/not_embedded.inc
+# The test can take very long time with valgrind
+--source include/not_valgrind.inc
 
 let $innodb_compression_algorithm_orig=`SELECT @@innodb_compression_algorithm`;
 

mysql-test/t/lock_multi_bug38499.test

@@ -2,6 +2,9 @@
 # MySQL >= 5.0
 #
 
+# The test can take hours with valgrind
+--source include/not_valgrind.inc
+
 # Save the initial number of concurrent sessions
 --source include/count_sessions.inc
 

mysql-test/t/lock_multi_bug38691.test

@@ -4,6 +4,8 @@
 # MySQL >= 5.0
 #
 
+# The test can take hours with valgrind
+--source include/not_valgrind.inc
 
 # Save the initial number of concurrent sessions
 --source include/count_sessions.inc

storage/oqgraph/mysql-test/oqgraph/social.test

+# The test can take very long time with valgrind
+--source include/not_valgrind.inc
+
 --disable_warnings
 DROP TABLE IF EXISTS rsb, rsb_graph;
 --enable_warnings