Merge pull request #90 from hintjens/master

Install Go and Java scripts
Moved third party package to the bottom of the imports
Defined setter methods for header fields
Dropped repeated fields support
Merge pull request #91 from armen/master

Dropped support of repeated fields
ripped out nasty repeated fields
Merge pull request #92 from sappo/master

Ripped out nasty repeated fields (c codec)
Removed progress message for consistency
Removed CZMQ dependency from zproto

Problem: cannot run "make install" without CZMQ, and cannot make CZMQ
without installing zproto.

Solution: remove C link/compile from Makefile; as zproto depends on
multiple languages, each will have its own test process. Also, in
makefile, generate example code in all languages.

Fixes #93