Moved version macros to top for better visibility
Merge pull request #759 from hintjens/master

Moved version macros to top for better visibility
Move linger test to issue repo.

See https://github.com/zeromq/issues/pull/7

Signed-off-by: Shannen Saez <shannenlaptop@gmail.com>
Merge pull request #760 from shancat/move_linger_test

Move linger test to issue repo.
Add ability to set and get DSCP socket option
tidy up
Merge pull request #761 from claws/add_dscp_sockopt

Add ability to set Differential Services Code Point socket option
Fix windows build for type of service.