Convert conditional Windows text API calls to explicit ANSI/MBCS.
Rationalize and update Visual Studio projects, add NuGet packaging.
Merge branch 'zeromq/master'
Rebuild generated project files and package to include merged changes.
Update packaging metadata.
Conditionally define fallback for ANSI Windows API call.
Update makefile.am
Merge pull request #432 from evoskuil/master

Rationalize and update VS projects and create NuGet packaging.
Fix typo in visual studio meta ui extension.
Update packaging metadata and add missing headers to package.
Remove dead code.
Merge pull request #434 from evoskuil/master

Update NuGet packaging metadata and add missing headers.
fix bug in zstr s_send_string
Merge pull request #435 from claws/zstr_fix

fix bug in zstr s_send_string
Integrate libsodium and other linkage options and update package.
Merge pull request #436 from evoskuil/master

Integrate libsodium and other linkage options and update package.
Update VS build configuration.
Merge pull request #437 from evoskuil/master

Update VS build configuration.
Fixed missing CZMQ_EXPORT.
Merge pull request #439 from mditzel/master

Fixed missing CZMQ_EXPORT.