Make the print for submodule conditionally appearing in the compile l…

…og file (#1716)

TYPE: no impact, text only

KEYWORDS: print, submodule status

SOURCE: internal

DESCRIPTION OF CHANGES:
Problem:
Currently when we compile, the section of the submodule status check from top-level Makefile always appears in the log file, which can be confusing to users.

Solution:
Add @ in front of 'if', and this will only print the appropriate message according to the situation.

LIST OF MODIFIED FILES: 
M     Makefile

TESTS CONDUCTED: 
1. Do mods fix problem? Yes, on a test compilation on Cheyenne.
2. The Jenkins tests are all passing.

Makefile

@@ -108,7 +108,7 @@ framework_only : configcheck
 
 wrf : framework_only
  $(MAKE) MODULE_DIRS="$(ALL_MODULES)" physics
- if [ \( ! -f run/MPTABLE.TBL \) -o \
+ @if [ \( ! -f run/MPTABLE.TBL \) -o \
  \( ! -f phys/module_sf_noahmpdrv.F \) -o \
  \( ! -f phys/module_sf_noahmp_glacier.F \) -o \
  \( ! -f phys/module_sf_noahmp_groundwater.F \) -o \