Avoid conflicts with SunOS regexp.h.
SunOS needs -lsocket -lnsl.
USE_TOOLS+= gettext.  Fixes build on SunOS.
Update to 17.0.6

Changelog:
    FIXED
    Security fixes can be found here
    FIXED
    Thunderbird now supports the Twitter API version 1.1 ahead of Twitter closing the 1.0 version (Bug 857049)

Fixed in Thunderbird 17.0.6
MFSA 2013-48 Memory corruption found using Address Sanitizer
MFSA 2013-47 Uninitialized functions in DOMSVGZoomEvent
MFSA 2013-46 Use-after-free with video and onresize event
MFSA 2013-44 Local privilege escalation through Mozilla Maintenance Service
MFSA 2013-42 Privileged access for content level constructor
MFSA 2013-41 Miscellaneous memory safety hazards (rv:21.0 / rv:17.0.6)
Updated mail/thunderbird to 17.0.6
Extend ip_mreq hack to SunOS platforms
Override results of the imake test to remove the dependency. Add fontenc
to dependency list. Bump revision.
Don't add imake dependency for KDE3.