Update Go examples to use socket option methods.
Merge pull request #321 from miniway/master

chapter5 first part of java clone examples
Merge pull request #322 from jtacoma/gozmq-sockopts

Update Go examples to use socket option methods.
Fixing memory leak in c++ majordomo demo.  issue #224
memory leak in c++ examples.  we never free the uuid after pushing it on the msg
Merge pull request #323 from timhanus/master

Memory Leaks in C++ Examples
[IMP] python examples: handle deletion in kvmsg.store
[FIX] python examples: fix issue with ttl=0 expiring immediately

in C examples, ttl=0 means do not expire.
[FIX] python examples: trivial sys.exit error in clonesrv6.py
[FIX] python examples: in clone.py, kvmap values are KVMsg not strings

This bug manifest itself with a stack trace when doing clone.get().
It seems to be present in the C code too?
Merge pull request #325 from lesbi/master

A couple of fixes to the python examples
chapter 6 second part of java clone example