[configure] Don't export systemtap vars to shell

They're only needed in C++.

- Tweak error message
- Test extended globs more

configure

@@ -310,13 +310,6 @@ echo_shell_vars() {
     echo 'READLINE_DIR='
   fi
 
-  # TODO: I don't think we need this in shell
-  if test "$have_systemtap_sdt" = 1; then
-    echo 'HAVE_SYSTEMTAP_SDT=1'
-  else
-    echo 'HAVE_SYSTEMTAP_SDT='
-  fi
-
   echo "PREFIX=$FLAG_prefix"
   echo "DATAROOTDIR=$FLAG_datarootdir"
 

cpp/core.cc

@@ -155,7 +155,7 @@ List<PasswdEntry*>* GetAllUsers() {
 #else
   fprintf(
       stderr,
-      "Oils compiled without libc *pwent() functions.  Can't list users.\n");
+      "oils: Can't list users because *pwent() functions weren't found in libc\n");
   return NewList<PasswdEntry*>();
 #endif
 }

test/configure-effects.sh

@@ -37,9 +37,12 @@ test-osh() {
   # GLOB_PERIOD
   $osh -x -c 'shopt -s dotglob'
 
-  # FNM_EXTMATCH
+  # FNM_EXTMATCH in glob()
   # Hm this will works
-  $osh -x -c 'echo */@(*.bash|*.asdl)'
+  $osh -x -c 'echo */*/t@(*.asdl|*.sh)'
+
+  # FNM_EXTMATCH in fnmatch()
+  $osh -x -c 'case foo.py in @(*.asdl|*.py)) echo py ;; esac'
 
   # HAVE_PWENT
   $osh -x -c 'compgen -A user'