Adds missing zsocket_sendmem declaration
Added dup, fprint and print methods for zchunk
Merge pull request #393 from sappo/master

Added dup, fprint and print methods for zchunk
Slight tweak on _print
Simplified _dup
Merge pull request #394 from hintjens/master

Tweaked _dup and _print
zloop: interpret a pollitem with socket=NULL and fd=0 as 'poll on fd 0'
Merge pull request #395 from mhaberler/master

zloop: interpret a pollitem with socket=NULL and fd=0 as 'poll on fd 0'
Updated man page
Removed experimental zservice class
Merge pull request #397 from hintjens/master

Removed zservice class
Fixed #398
Deprecated zmsg_push by zmsg_prepend

- method was unsafe, taking ownership of the frame (and destroying it)
  without nullfying the reference.
- deprecated zmsg_push (and also zmsg_wrap which has same issue)
- added new zmsg_prepend () using safe API style

Cause of this change was 2-3 hours lost in zproto tracking down obscure
bug caused by use of zframe_push(). Once is enough. :)
add zcert_save_secret
Merge pull request #400 from genjix/master

add zcert_save_secret
VS 2013 (v120) solution and projects, x86/x64, static/dyanamic, debug/release.
Remove export define limitation that prevented a windows DLL from loading the library statically. Adapted snippet from libzmq.
Provide empty definition of CMQ_EXPORT for non-_WIN32 systems.
Change user of _WIN32 to __WINDOWS__ for consistency with existing impl. Fix static builds preproc instruction.
added zcert_save_secret() to documentation.