Update mlterm to 3.3.2. (leaf package update, ok'ed wiz@)

pkgsrc changes:
- remove post-3.3.1 patches
- pull post-3.3.2 fixes for mlterm-fb from upstream:
  - 4d974f7: fix mlterm-fb scroll on >=8bpp framebuffers
  - 0b2987a: fix palette handling on 4bpp framebuffers

Changes from doc/en/ReleaseNote:

ver 3.3.2
* Support 4bpp framebuffer on NetBSD/luna68k.
* Desynchronize ssh negotiation on cygwin or mingw.
* "inner_border" option accepts "[horizontal border],[vertical border]" format value.
* Add "leftward_double_drawing" option which embolds medium fonts by drawing doubly at
  1 pixel leftward instead of rightward.
* Add vte_terminal_set_color_*_rgba() functions to libvte compatible library.
* Bug fixes:
  Fix memory leak when opening pty fails on win32gdi.
  Fix the bug which disabled to clear hidden input method window it if large
  value is specified for --border option.
  Fix the bug which disabled to paste UTF-8 string.
  Bitbucket pull request #1 (Thanks to Hayaki Saito san)
  Fix the bug which causes segfault in pasting text via win32 clipboard from x11
  applications over ssh x11 forwarding
  Fix segfault caused by zero column characters like 0x200e.

(tsutsui)