Fix bug in --with-tcltk-framework= handling

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@32341 15284696-431f-4ddb-bdfa-cd5b030d7da7

configure

@@ -8581,7 +8581,7 @@ rm -f conftest*
 if eval "test \"`echo '$ac_cv_func_'Tk_MainWindow`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   
-TCLTKLIBS = -framework Tcl -framework Tk
+TCLTKLIBS="-framework Tcl -framework Tk"
 
 else
   echo "$ac_t""no" 1>&6

configure.in

@@ -812,7 +812,7 @@ LOC_CHECK_INCLUDES(tk.h,Tk,$TCLINCDIR)
 ac_save_ldflags="$LDFLAGS"
 LDFLAGS="$TCLTKLIBPATH -framework Tcl -framework Tk $LIBS"
 AC_CHECK_FUNC(Tk_MainWindow,[
-TCLTKLIBS = -framework Tcl -framework Tk
+TCLTKLIBS="-framework Tcl -framework Tk"
 ],[
 AC_MSG_ERROR([*** Unable to locate Tcl/Tk libraries.])
 ])