LP #1088529: log_slow_verbosity help text missing "minimal", "standard", "full" options

**Reported in Launchpad by Laurynas Biveinis last update 30-03-2016 12:09:16

5.5:

const char* log_slow_verbosity_name[] = {
"microtime", "query_plan", "innodb",
"profiling", "profiling_use_getrusage",
"minimal", "standard", "full", 0
};

static Sys_var_set Sys_log_slow_verbosity(
"log_slow_verbosity",
"Choose how verbose the messages to your slow log will be. "
"Multiple flags allowed in a comma-separated string. [microtime, query_plan, innodb, profiling, profiling_use_getrusage]",
SESSION_VAR(log_slow_verbosity), CMD_LINE(REQUIRED_ARG),
log_slow_verbosity_name, DEFAULT(SLOG_V_MICROTIME),
NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0),
ON_UPDATE(update_log_slow_verbosity_helper));