Problem: zhash key type is const char *, but zhash_cursor type isn't
Solution: Make zhash_cursor return const char *
Problem: docs are out of date
Solution: `cd doc && ./mkmans`
Merge pull request #835 from jemc/master

Problem: zhash key type is const char *, but zhash_cursor type isn't
Problem: Missing feature to export UUID as fomatted string in canonical form (8-4-4-4-12)

Solution: Added a method zuuid_formatted_str to export the UUID string in canonical form
Merge pull request #837 from oikosdev/master

zuuid: proposed a feature to export UUID in their canonical form
Problem: Selftest for zhash leaks memory
Solution: Destroy the hashes that are created
Problem: Code for zuuid_formatted_str is not quite idiomatic
Solution: Return a freshly allocated string instead (and adjust whitespace)
Merge pull request #838 from jemc/master

Problem: Code for zuuid_formatted_str is not quite idiomatic
Fix issue #840 erroneous readelf -d output.
Merge pull request #841 from pmienk/master

Fix issue #840 erroneous readelf -d output.
Problem: Can't install czmq.7

Searching for czmq.7 in srcdir while it is generated in buildir. Fixed
by removing srcdir and change submitted to zproject:
https://github.com/zeromq/zproject/pull/101
Merge pull request #843 from miska/master

Problem: Can't install czmq.7
Problem: zsock_fd and zsocket_fd don't work on Win64

Solution: use/return SOCKET type instead of int.

Fixes #825
Regenerated documentation