Philippe 09/12/2016: hide use of OpenMP library when not compiling with OpenMP

src/SURFEX/hvac_autosize.F90

@@ -55,13 +55,13 @@ USE YOMHOOK   ,ONLY : LHOOK,   DR_HOOK
 USE PARKIND1  ,ONLY : JPRB
 !
 #ifdef AIX64 
-USE OMP_LIB
+!$ USE OMP_LIB
 #endif
 !
 IMPLICIT NONE
 !
 #ifndef AIX64
-  INCLUDE 'omp_lib.h'
+!$  INCLUDE 'omp_lib.h'
 #endif
 !
 !*    0.1    Declaration of arguments