mysql_notification.c not ready to compile on windows

[EmadAbdelqader]

The file should be compiled to dll shared library for Windows.

[Cyclonecode]

As you can see in the README this only tested on linux and osx, but indeed it should be compiled to a dynamic link library on windows. I will look into this and make and update.

[shujaatak]

it should be compiled to a dynamic link library on windows. I will look into this and make and update.

It would be highly appreciated!