Log Message:
mlterm: update to 3.8.9.

pkgsrc changes:
- remove patches applied in the upstream

Upstream changes noted in doc/en/ReleaseNote:

ver 3.8.9
* Support zmodem. (See doc/en/README.tarnsfer)
* Add "send_file" and "zmodem_start" to OSC 5379.
* Add receive_directory / --recvdir option.
* Support xdg-shell-v6 (unstable) on wayland.
* Support copy&paste via X11 primary selection on wayland.
* Hide the mouse cursor in inputting keys by default on xlib and win32.
* ~/.mlterm/font accepts UTF-8 on windows.
* Change the default value of "font_size_range" option from 1-100 to \ 
1-10000.
* Clear a window and scroll out all lines on resizing only if
  the value of --sr / "scroll_on_resizing" option is true.
* Set _NET_WM_PID property.
* Revive -N/"app_name" option which sets WM_CLASS property.
  (WM_CLASS was disabled at 3.8.6)
* Add a percent or number argument without '+' and '-' to \ 
"vresize_screen" and
  "hresize_screen" of OSC 5379.
* Add "RESET" (which resets the parser of mlterm) as a shortcut key.
* Add vte 0.58 API symbols to libvte compatible library.
* Merge patches:
  \ 
https://bitbucket.org/arakiken/mlterm/pull-requests/5/fix-for-wscons-framebuffer/diff
  https://sourceforge.net/p/mlterm/patches/24/
* Bug fixes:
  Fix memory leaks of libptymosh.so
  Fix https://sourceforge.net/p/mlterm/mailman/message/36633222/ (Enbugged at 3.8.8)
  Fix segfault of mlterm for java by race condition.
  Fix unexpected invalidation of --mdi=false option. (Enbugged at 3.8.8)
  Fix uninitialized memory access of mlimgloader.exe for win32.
  Fix broken images of some sixel graphics. (Enbugged at 3.8.5)