engine.pl: Fix a recent breakage of the buildsystem generator

Commit ade2ca0 (Do not try to remove directories when removing
old links, 2009-10-27) added an expression to a 'test' using an
'-o' or connective. This resulted in the buildsystem generator
mistaking a conditional 'rm' for a linker command. In order to
fix the breakage, we filter out all 'test' commands before then
attempting to identify the commands of interest.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Acked-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/buildsystems/engine.pl

@@ -135,6 +135,11 @@ sub parseMakeOutput
             }
         } while($ate_next);
 
+        if ($text =~ /^test /) {
+            # options to test (eg -o) may be mistaken for linker options
+            next;
+        }
+
         if($text =~ / -c /) {
             # compilation
             handleCompileLine($text, $line);
@@ -180,9 +185,6 @@ sub parseMakeOutput
 #        } elsif ($text =~ /generate-cmdlist\.sh/) {
 #            # command for generating list of commands
 #
-#        } elsif ($text =~ /^test / && $text =~ /|| rm -f /) {
-#            # commands removing executables, if they exist
-#
 #        } elsif ($text =~ /new locations or Tcl/) {
 #            # command for detecting Tcl/Tk changes
 #