Fix --with-wxwidgets= check (bug https://trac.osgeo.org/grass/ticket/579)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@36943 15284696-431f-4ddb-bdfa-cd5b030d7da7

configure

@@ -15119,7 +15119,7 @@ if test "$with_wxwidgets" = "no" ; then
 else
   echo "$ac_t""yes" 1>&6
   USE_WXWIDGETS="1"
-  if test "`basename $with_wxwidgets`" = "wx-config" ; then
+  if test "`basename $with_wxwidgets`" != "yes" ; then
     WX_CONFIG="$with_wxwidgets"
   fi
 

configure.in

@@ -1691,7 +1691,7 @@ if test "$with_wxwidgets" = "no" ; then
 else
   AC_MSG_RESULT(yes)
   USE_WXWIDGETS="1"
-  if test "`basename $with_wxwidgets`" = "wx-config" ; then
+  if test "`basename $with_wxwidgets`" != "yes" ; then
     WX_CONFIG="$with_wxwidgets"
   fi