timings: fixes to be usable again

The timing infrastructure introduced with commit dfb952f
was broken by changes made via commit fe1c384

This patches restores the ability to build Open MPI with the --enable-timings config option set.

Note the output generated wth env OMPI_TIMING_ENABLE=1 is a bit jumbled at the moment but that will be
addressed as part of a solution to issue #11166

Related to #11213

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

Author: hppritcha

opal/runtime/opal_init.c

@@ -138,6 +138,8 @@ int opal_init(int *pargc, char ***pargv)
 {
     int ret;
 
+    OPAL_TIMING_ENV_INIT(otmng);
+
     if (opal_initialized != 0) {
         if (opal_initialized < 0) {
             return OPAL_ERROR;

opal/util/Makefile.am

@@ -125,7 +125,7 @@ libopalutil_core_la_SOURCES = \
         uri.c
 
 if OPAL_COMPILE_TIMING
-libopalutil_la_SOURCES += timings.c
+libopalutil_core_la_SOURCES += timings.c
 endif
 
 libopalutil_core_la_LIBADD = \

opal/util/timings.c

@@ -85,9 +85,6 @@ opal_timing_ts_func_t opal_timing_ts_func(opal_timer_type_t type)
         return NULL;
 #endif // OPAL_TIMER_USEC_NATIVE
     default:
-        if (!opal_initialized) {
-            return get_ts_gettimeofday;
-        }
 #if OPAL_TIMER_CYCLE_NATIVE
         return get_ts_cycle;
 #elif OPAL_TIMER_USEC_NATIVE