Import uhd-3.7.2rc1 as ham/uhd.

[USRP-users] [UHD-3.7.2-rc1] Release Candidate Announcement
 http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2014-July/010219.html

UHD is the free & open-source software driver and API for the
Universal Software Radio Peripheral (USRP(TM)) SDR platform,
created and sold by Ettus Research, LLC.

UHD supports all Ettus Research USRP(TM) hardware, including
all motherboards and daughterboards, and the combinations
thereof.
ham/uhd version 3.7.2rc1 added.
Put back CONFIGURE_ARGS.gnu-iconv, it is required for the ICONV_TYPE=gnu
case to avoid conflicts between the native libiconv and iconv.h from GNU
libiconv and ensure only GNU libiconv is used.  Discussed with prlw1.
Fix distinfo to use new DISTNAME.
Add a comment explaining why we need to force --with-libiconv=gnu for
the ICONV_TYPE=gnu case.  Suggested by wiz.
(Upstream update) 3.7.2rc1 to 3.7.2
http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2014-August/010453.html
------------------
we've finished testing our latest bugfix release; UHD Version 3.7.2 is
now available. It is tagged at
https://github.com/EttusResearch/uhd/tree/release_003_007_002.

Since the last release candidate, we actually fixed an issue with phase
alignment in the X300 for MIMO configurations, among a few other things,
and the binaries for X300 were updated again (B200 images were already
updated in the release candidate). Of course, you have access to all the
binaries through our download utility.

3.7.2 Changelog:
* Fixed X300 phase alignment issues
* Fixed CMake 2.6 incompatibility issues
* EEPROM burner improvements
* Properly flushing PCIe chain on device to prevent stale data.
* Adjusted bus clock rate in FPGA to improve timing.
* Fixed issue where FPGA would fail to load FPGA image over PCIe.
* Fixed incompatibility issue with USRP2 FPGA burner utility.
* Fixed issue where ZPU would report empty NMEA strings from GPSDO.
* Updated some functions to no longer use deprecated Boost calls.
* Fixed issue where libusb would declare 'connection refused'.
* Fixed Windows library package naming.
* Updated documentation.
* Fixed reversed TX / RX colors in X300 LED indicators.
* DBSRX2 now works properly with X300 / X310.
* Updated include files to build on older distros of Linux.
* Fixed issue with 'item32' type converter from GNU Radio.
* Fixed issue where channels on B210 would occasionally not be
phase-aligned.
* Fixed problem causing channels on B210 to swap between runs.
* Fixed issue in N-Series devices causing scaling error @ 50 MSps.
* The B200 / B210 now generates an internal PPS if none is provided.
* Improved performance on PCIe for X300.
* B200 / B210 properly reports clock rate (issue with float comparison).
* Fixed issue with filter selection in B200 that caused loss of RX power.
* Removed ref lock check from X300 where it wasn't necessary.
Remove file from PLIST that is not installed (see PR 49173).
Explicitly pass --cpu=amd64 for MACHINE_ARCH=x86_64, fixes build on SunOS.
Import direvent-5.0 as sysutils/direvent.

Direvent is a directory content watcher daemon, i.e. a program that
monitors a set of directories on the file system and reacts when
their content changes. When a change is detected, the daemon reacts by
invoking an external command configured for that kind of change.

The program aims to provide a uniform and system-independent
command-level interface for file system events.
+ direvent.
Added sysutils/direvent version 5.0
SunOS needs -liconv.
Upstream DISTNAME must not be renamed.