Fix build on 4.X by conditionally whacking -fshort-wchar from
the gcc invocation.
Also, fix the build on everything by adding a BUILD_DEPENDS
on zip.
Also, add a quick note about how to enable to extension to the
pkg-descr.
Approved by: portmgr (marcus)
Mozilla New Mail Icon is an extension which displays an icon in the
system tray when new mail arrives in Mozilla Thunderbird. While it
supports the standard (FreeDesktop.org) system tray, as used by GNOME,
KDE and IceWM, it requires GNOME libraries to build and run.
WWW: http://moztraybiff.mozdev.org/