Various enhancements

- OS/2 Patches
  - OpenVMS updates
  - Sanitize the handling of -include/sinclude with and without -k
  - Fix the setting of $< for order-only rules.

tests/scripts/options/dash-C

@@ -33,6 +33,10 @@ chdir $workdir;
 $wpath = &get_this_pwd;
 chdir $pwd;
 
+if (-f $example) {
+  $test_passed = 0;
+}
+
 # Create the answer to what should be produced by this Makefile
 $answer = "$make_name: Entering directory `$wpath'\n"
         . "$delete_command EXAMPLE_FILE\n"
@@ -40,9 +44,4 @@ $answer = "$make_name: Entering directory `$wpath'\n"
 
 &compare_output($answer,&get_logfile(1));
 
-if (-f $example)
-{
-   $test_passed = 0;
-}
-
 1;

tests/scripts/options/dash-k

@@ -97,4 +97,18 @@ $make_name: Target `all' not remade because of errors.\n";
 
 &compare_output($answer, &get_logfile(1));
 
+# TEST -- make sure we keep the error code if we can't create an included
+# makefile.
+
+run_make_test('all: ; @echo hi
+include ifile
+ifile: no-such-file; @false
+',
+              '-k',
+              "#MAKEFILE#:2: ifile: No such file or directory
+#MAKE#: *** No rule to make target `no-such-file', needed by `ifile'.
+#MAKE#: Failed to remake makefile `ifile'.
+hi\n",
+              512);
+
 1;