add EXTRA_LDFLAGS_PROGRAM to config.nice (as LDFLAG is quite useless)

acinclude.m4

@@ -2496,7 +2496,7 @@ AC_DEFUN([PHP_CONFIG_NICE],[
 
 EOF
 
-  for var in CFLAGS CXXFLAGS CPPFLAGS LDFLAGS LIBS CC CXX; do
+  for var in CFLAGS CXXFLAGS CPPFLAGS LDFLAGS EXTRA_LDFLAGS_PROGRAM LIBS CC CXX; do
     eval val=\$$var
     if test -n "$val"; then
       echo "$var='$val' \\" >> $1