[#LIBZMQ-446] Silence error on setting PGM_TOS due to some platforms raising an error at runtime.  Noted are RHEL 4.
Merge pull request #81 from steve-o/libzmq-446

[#LIBZMQ-446] Silence error on setting PGM_TOS on REL 4.
Back port fix for LIBZMQ-526

Fix syntax error
Merge pull request #82 from trevorbernard/master

Backport fix for LIBZMQ-526
Updated NEWS for 3.2.3
Bumped version number for next release 3.2.4
Add newline to end of test_connect_delay.cpp so it compiles with older versions of GCC
Various cleanups to test programs

 - Patch applied using git am from libzmq commit 5f009e52
 - tests/test_raw_sock.cpp doesn't exist in zeromq3-x, so that
   file was manually removed from the patch before 'git am'

Signed-off-by: AJ Lewis <aj.lewis@quantum.com>
Merge pull request #83 from vortechs2000/fix_323_builds

Fix 323 builds
Resolved merge conflict
patch for issue 456

Do not filter out duplicate subscriptions on the XSUB side of
XSUB/XPUB, so that ZMQ_XPUB_VERBOSE doesn't get blocked by forwarding
devices (as long as the devices all use ZMQ_XPUB_VERBOSE)
Code formatting
#456 was not in 3.2.2 but will be in 3.2.4
Merge pull request #85 from hintjens/master

Fix for #456 was not backported to 3.2.2; will be in 3.2.4 now
Fixed packaging for Windows, was missing errno sources
Merge pull request #6 from zeromq/master

merged to latest zeromq3