Pull one more post-3.2.0 fix from upstream (leaf package bug fixes):
 https://bitbucket.org/arakiken/mlterm/commits/c8814173cb051b32ce1d1b440b4033bd0
bba567d#chg-xwindow/fb/x_display.c
> fb/x_display.c: get_ps2_kcode() is added to convert usb keycode
> to ps2 keycode for iBus on NetBSD/OpenBSD framebuffer.

This makes ibus inputmethod usable with USB keyboard on mlterm-fb.

Bump PKGREVISION.
Updated x11/mlterm to 3.2.0nb6
Update to 22.0

* On NetBSD WebRTC support is disabled, because libxul.so has some errors
  in link stage. WebRTC support should be tested on non-NetBSD platforms.
* It seems that OSS sound support is not working properly on NetBSD.

Changelog:
    NEW
    WebRTC is now enabled by default!
    NEW
    Windows: Firefox now follows display scaling options to render text larger on high-res displays
    NEW
    Mac OS X: Download progress in Dock application icon
    NEW
    HTML5 audio/video playback rate can now be changed
    NEW
    Social services management implemented in Add-ons Manager
    NEW
    asm.js optimizations (OdinMonkey) enabled for major performance improvements
    CHANGED
    Improved WebGL rendering performance through asynchronous canvas updates
    CHANGED
    Plain text files displayed within Firefox will now word-wrap
    CHANGED
    For user security, the |Components| object is no longer accessible from web content
    CHANGED
    Pointer Lock API can now be used outside of fullscreen
    DEVELOPER
    CSS3 Flexbox implemented and enabled by default
    DEVELOPER
    New Web Notifications API implemented
    DEVELOPER
    Added clipboardData API for JavaScript access to a user's clipboard
    DEVELOPER
    New built-in font inspector
    HTML5
    New HTML5 <data> and <time> elements
    FIXED
    Various security fixes
    FIXED
    Scrolling using some high-resolution-scroll aware touchpads feels slow (829952)

Fixed in Firefox 22
MFSA 2013-62 Inaccessible updater can lead to local privilege escalation
MFSA 2013-61 Homograph domain spoofing in .com, .net and .name
MFSA 2013-60 getUserMedia permission dialog incorrectly displays location
MFSA 2013-59 XrayWrappers can be bypassed to run user defined methods in a privileged context
MFSA 2013-58 X-Frame-Options ignored when using server push with multi-part responses
MFSA 2013-57 Sandbox restrictions not applied to nested frame elements
MFSA 2013-56 PreserveWrapper has inconsistent behavior
MFSA 2013-55 SVG filters can lead to information disclosure
MFSA 2013-54 Data in the body of XHR HEAD requests leads to CSRF attacks
MFSA 2013-53 Execution of unmapped memory through onreadystatechange event
MFSA 2013-52 Arbitrary code execution within Profiler
MFSA 2013-51 Privileged content access and execution via XBL
MFSA 2013-50 Memory corruption found using Address Sanitizer
MFSA 2013-49 Miscellaneous memory safety hazards (rv:22.0 / rv:17.0.7)
Updated www/firefox to 22.0
Update to 22.0

* Sync with firefox-22.0.
Updated www/firefox-l10n to 22.0
Make DTrace a default option on OSX.
Enforce using the system libtool on OSX.  Fixes build + modules.
Add avl-2.0.3 with comment.
Set LICENSE, update HOMEPAGE, and remove commented-out MASTER_SITES.