gecode_3: use bash to run "configure", fix error

Error:

/configure: ./configure.lineno: line 11561: syntax error: unexpected "("

pkgs/development/libraries/gecode/3.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, perl }:
+{ stdenv, fetchurl, bash, perl }:
 
 stdenv.mkDerivation rec {
   name = "gecode-${version}";
@@ -9,7 +9,9 @@ stdenv.mkDerivation rec {
     sha256 = "0k45jas6p3cyldgyir1314ja3174sayn2h2ly3z9b4dl3368pk77";
   };
 
-  buildInputs = [ perl ];
+  nativeBuildInputs = [ bash perl ];
+
+  preConfigure = "patchShebangs configure";
 
   meta = with stdenv.lib; {
     license = licenses.mit;