Log Message:
Update mlterm to 3.3.4.  (leaf package update)

pkgsrc changes:
 - remove post-3.3.3 fix patches
 - pull a post-3.3.4 bug fix patch for NetBSD and OpenBSD

Changes from doc/en/ReleaseNote:

ver 3.3.4
* Support not only sixel graphics but also other major image formats on Android.
* Support ReGIS partially. (depends on SDL(SDL2), SDL_ttf(SDL2_ttf) and fontconfig)
* Output strerror(errno) on error.
* Support "key=value #comment" style in the same line in ~/.mlterm/main.
* Draw all ambiguous width characters one by one to fit the column width unless
  -V option is specified.
* Merge patches:
  https://gist.github.com/tsutsui/9285759. (Thanks to @tsutsuii)
* Bug fixes:
  Change the default resolution on NetBSD/x68k from 512x512x8 to 768x512x4.
  Fix the bug which output help message to stdout where mlterm waits for image
  data and which made mlterm allocate too large memory. (enbugged at 3.3.3)
  Fix the bug which disabled to start mlconfig. (enbugged at 3.3.3)
  Fix the bug which caused segfault if x11 forwarding failed.
  Fix the bug which caused segfault in resuming on Android.
  Show candidate strings of uim-mozc correctly.
  Fix the bug which disabled normal users from opening screen on NetBSD/x68k \ 
framebuffer.
  Fix segfault in connecting unknown hosts on java.