Log Message:
Update drraw to 2.2a5.

Changes since 2.2a4 [2007-05-30]:
- Various dates displayed now follow the ISO 8601 format.
- Graph start date, end date and creation dates can now be added to the image.
- Data Source Templates have been enhanced:
  - Dynamic elements can now be stacked on top of previous graph element not
    just on top of themselves (courtesy of Francois Deppierraz),
  - Number of elements can be used in dynamic element CDEFs, and Formula field,
  - Builtin formulas allow calculating the AVERAGE and STDDEV,
  - Old files and files without values are automatically skipped (courtesy of
    R.P. Aditya).
- Orange look, still ugly though :)
- New Data Source rows are now properly disabled on load.
- Allow &DBFinder() to follow symlinks.
- Switched to /usr/bin/perl (from /usr/local/bin/perl).