Bug#36026 - Test funcs_1.<engine>_trig_03 failing on Windows

Bug#36028 - Test funcs_1.<engine>_trig_03e failing on Windows
Bug#36029 - Test funcs_1.<engine>_trig_0407 failing on Windows
Bug#36030 - Test funcs_1.<engine>_trig_08 failing on Windows

Adding $MASTER_MYSOCK to init_win_path()
When path names are short, master.sock ends up in MYSQL_TMP_DIR, but with longer path names,
master.sock ends up in /tmp/<random_string>/ and these tests will fail due to path delimiter difference.

New changeset to start with 5.0 -- Not all of these tests are present in 5.0, but want to keep mysqltest the same

client/mysqltest.c

@@ -5464,6 +5464,7 @@ void init_win_path_patterns()
   const char* paths[] = { "$MYSQL_TEST_DIR",
                           "$MYSQL_TMP_DIR",
                           "$MYSQLTEST_VARDIR",
+                          "$MASTER_MYSOCK",
                           "./test/" };
   int num_paths= sizeof(paths)/sizeof(char*);
   int i;