Fix build on OS X, complains about variable length array folded to constant array.
Rename ZSOCK_MAX_FRAMES to ZSOCK_BSEND_MAX_FRAMES for clarity. Bring back the previous comment.
Problem: zbeacon.c doesn't use self->poller
Solution: Remove self->poller
Fixes #794
PROBLEM: zring was removed, but can't be implemented using zlistx and zhashx

zring has been removed recently because it's a weird data structure.
Yet, I have found it really useful, so tried to implement it on top
of zlistx and and zhashx, by storing list handles in the hash.
However, when deleting an item from the hash, one needs to convert a
list handle to the item stored in it, which is currently not possible,
because the pointer is opaque.

SOLUTION: add a function to convert a handle into the associated item.
Merge pull request #845 from skaes/convert-list-item-handle-to-list-item

PROBLEM: zring was removed, but can't be implemented using zlistx and zhashx
Problem: can't delete items while iterating

Solution: when deleting item under cursor, move cursor to previous
item so that _next works as expected.

Also, add test case for this.
Problem: zlistx_handle () is not an obvious method name

Solution: since 'cursor' is already in the API vocabulary, and this
method returns the cursor, a better name is zlistx_cursor ().
Problem: man pages and selftest are slightly outdated

Solution: regenerate/fix these.
Merge pull request #846 from hintjens/master

Small improvements to zlistx
Removed unused scrap file
Problem: if zauth can't load password file, says nothing

Solution: issue a warning if the password file doesn't exist.
Implemented ZeroMQ RFC 32 Z85 mode in zarmour class.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/zarmour.c
Merge pull request #847 from hintjens/master

Trivial improvement to zauth
Removed zring man pages
Removed extra blank line at start
Problem: need to generate multiversion man pages for API site

Solution: move tooling into ztools project as done for ZeroMQ.
Merge pull request #848 from hintjens/master

Fixing online API docs
Merge remote-tracking branch 'upstream/master'
Fixed merge error.