back port the fix for seam script in distribution should have executable permission set

<listitem><para>Bash script <filename>seam2/seam</filename> has executable permission only on some Linux systems. This is caused by a different zip utility implementation included in the distribution. Executable permissions are now assigned to <filename>seam2/seam</filename> correctly for the following operating systems: </para><itemizedlist><listitem><para>Fedora 13</para></listitem><listitem><para>Red Hat Enterprise Linux 4</para></listitem><listitem><para>Red Hat Enterprise Linux 5</para></listitem><listitem><para>Red Hat Enterprise Linux 6</para></listitem></itemizedlist><para>The fix is not available for the zip utility used on other operating systems such as Ubuntu. </para></listitem>