#126 VMS incompatibility

[Chris Sharman]

Change Smarty.class.php line 1798 to
$_crc32 = '##' . substr($_crc32,0,3) .
$_compile_dir_sep . '##' . $_crc32;

(replace 2 * '%%' with '##')

because the VMS operating system treats % as a
filesystem wildcard.

This appears to be the only change required to have
issue-tracker 4.0.4 work on OpenVMS (also requires
ODS-5 filesystem, rather than the older traditional ODS-2).

I'd appreciate it if this (or similar - $-_ are ok if #
is a bad choice - email me) could make it into future
versions to support VMS along with everything else out
of the box.

Thanks
Chris