Windows 7 Test Build 6

Set minimum windows version in CMakeLists.txt

I don't know if I also need to set this for zlib but we will see

Mojang's LevelDB library in Shared Object form

A fix for some windows users. Builds the windows versions against v140 so that the extra dependency is not needed.

Mojang's LevelDB library in Shared Object form

0.5

Merged modified linux build into main build script