add support for additional ./config/default option CONFIG_OPTS

for mistral builds

config/default

@@ -194,22 +194,22 @@ case "${HOSTNAME}" in
         PREFIX="--prefix=$(pwd)/build/${COMP}"
 
         if  test "$COMP" = intel ; then
-          ${CONFPATH}configure $PREFIX $CDILIBS \
+          ${CONFPATH}configure $PREFIX $CONFIG_OPTS $CDILIBS \
                     LDFLAGS="-Wl,-rpath,/sw/rhel6-x64/eccodes/eccodes-2.3.0-gcc48/lib" \
                     F77=ifort FC=ifort FFLAGS="-g -O2" \
 	            CC=icc   CFLAGS="-g -Wall -O2 -qopt-report=5 -march=core-avx2"
         elif  test "$COMP" = pgi ; then
-          ${CONFPATH}configure  $PREFIX $CDILIBS \
+          ${CONFPATH}configure  $PREFIX $CONFIG_OPTS $CDILIBS \
                     LDFLAGS="-Wl,-rpath,/sw/rhel6-x64/eccodes/eccodes-2.3.0-gcc48/lib" \
 	            CXX=pgc++ CXXFLAGS="-g -fast" \
 	            CC=pgcc   CFLAGS="-g -fast"
         elif  test "$COMP" = gnu_pic ; then
-          ${CONFPATH}configure $PREFIX $CDILIBS \
+          ${CONFPATH}configure $PREFIX $CONFIG_OPTS $CDILIBS \
                     LDFLAGS="-Wl,-rpath,/sw/rhel6-x64/eccodes/eccodes-2.3.0-gcc48/lib" \
                     FC=gfortran F77=gfortran FFLAGS="-g -O2" \
                     CC=gcc  CFLAGS='-g -Wall -O3 -march=native -mavx2 -fPIC'
 	else
-          ${CONFPATH}configure $PREFIX  $CDILIBS \
+          ${CONFPATH}configure $PREFIX $CONFIG_OPTS  $CDILIBS \
                     LDFLAGS="-Wl,-rpath,/sw/rhel6-x64/eccodes/eccodes-2.3.0-gcc48/lib" \
                     FC=gfortran F77=gfortran FFLAGS="-g -O2" \
                     CC=gcc  CFLAGS='-g -Wall -O3 -march=native -mavx2'