DejaGNU: Fix the default target found by `runtest'.

svn path=/nixpkgs/trunk/; revision=20744

pkgs/development/tools/misc/dejagnu/default.nix

···
     sha256 = "13841q6pfwd9d1sdw48yxdyb4xhiccii0mb0ilql627v43pyvyyh";
   };
 
+  patches = [ ./wrapped-runtest-program-name.patch ];
+
   buildInputs = [ expect makeWrapper ];
 
   # FIXME: Enable when the "spawn id" problem is fixed.

pkgs/development/tools/misc/dejagnu/wrapped-runtest-program-name.patch

···
+This patch gives `runtest' a `$0' that contains `runtest' instead
+of `.runtest-wrapped'.  This is required because `runtest' checks
+what `$0' looks like to determine the target.
+
+--- dejagnu-1.4.4/runtest	2003-08-17 03:27:59.000000000 +0200
++++ dejagnu-1.4.4/runtest	2010-03-18 15:57:58.000000000 +0100
+@@ -10,6 +10,7 @@
+ # Get the execution path to this script and the current directory.
+ #
+ mypath=${0-.}
++mypath="`echo $mypath | sed -'es|\.runtest-wrapped|runtest|g'`"
+ if expr ${mypath} : '.*/.*' > /dev/null
+ then
+     :
+