Log Message:
Update to verion 9.19.

Changes:

- work around perl 5.18.0 breakage in tabbed extension
  (reported by Karol Blazewicz) and in pod (Dominic Hargreaves).
- fix regression that caused the double-click word selection to
  erroneously include a tab on the left of the selected word.
- implement FOCUS variable and focus_fade function in background
  expression, to allow focus-sensitive background images.
- add support for the set cursor style (DECSCUSR) control
  function.
- honour cursorColor also when the cursor style is underline.
- export some Color_xxx constants to Perl.

pkgsrc changes:
- remove patches/patch-src_perl_tabbed, it is upstream now