Added the Lua Proxy DLL.

This builds the lua5.1.dll file on Windows, making it 64-bit if so required.
Added a missing endline.
Moved CodeCoverage into a separate cmake condition.
CMake: Added log message for coverage.
Update SetFlags.cmake
Update SetFlags.cmake
Added MSVC guard
CMake: pthread is used only on Unix.
Removed the md5 library, obsoleted by PolarSSL.

Fixes #1130.
Added PolarSSL dependency to Bindings.
Merge pull request #1129 from mc-server/CodeCoverageCondition

Moved CodeCoverage into a separate cmake condition.
Added generic entity-collecting.

Now any cEntity can be collected, not only cPickups.
This should help PR #1098.
Fixed server forcing players afloat

* Fixes #1131
Fixed bad water/redstone simulator communication

* Fixes #713
Minor change to buttons and levers

+ They now detect if the block they are on occupies its voxel, instead
of just being solid
Added more block exceptions to torches
Changed include folders to work for Bindings, too.
CMake: Added polarssl include dir as non-system.
Fixed a silly path error in #include.
Implemented tripwire(s) (hooks)

* Fixes #944