Fix Makefile.power for xlf

Makefile.power

@@ -70,8 +70,12 @@ else
 FCOMMON_OPT += -O1 -frecursive -mcpu=power8 -mtune=power8  -fno-fast-math 
 endif
 else
+ifeq ($(F_COMPILER), IBM)
+FCOMMON_OPT += -O2 -qrecur -qnosave
+else
 FCOMMON_OPT += -O2 -frecursive -mcpu=power8 -mtune=power8  -fno-fast-math 
 endif
+endif
 else
 FCOMMON_OPT += -O2 -Mrecursive
 endif

f_check

@@ -117,6 +117,9 @@ else
                             vendor=PGI
                             openmp='-mp'
                             ;;
+                        *xlf*)
+                            vendor=IBM
+                            ;;
                         *)
                             vendor=G77
                             openmp=''