zmqcheck reimplemented to improve portability

Current `zmqcheck doesn't work on Windows because of multiple issues. One example is using hardcoded `make` instead of `$Config{make}` which can be either `dmake` or `nmake` on Windows.

Fortunately, a more portable and robust implementation is already present in `inc/Devel/CheckLib.pm`.

If this patch is accepted, whole `tools/zmqcheck` folder can be deleted and manifest updated.
Fixed TravisCI tests
Fixed TravisCI tests
Fixed TravisCI tests
Fixed TravisCI tests
Paths were incorrectly set up for check_lib()
Reverted an unnecessary scope change
Removed tools/zmqcheck/ as it's not used anymore
Merge pull request #55 from nponeccop/patch-1

zmqcheck reimplemented to improve portability