Removed polarSSL makefile. Fixes #591.

Also normalises polarssl submodule URL.
Fixed convertToPickups for doors
Fixed convertToPickups for fence gates
Added default value to switch and spruce gate to fence gate handler
Merge pull request #1459 from Masy98/blocks

Fixed drops for Doors and Fence Gates
Add data accessor.
Set chunk data
Correct method name.
Update IncrementalRedstoneSimulator.inc
Update IncrementalRedstoneSimulator.inc
Update creatable.cpp
Merge pull request #1461 from mc-server/RedstoneFix

Redstone fix
Added barriers correctly
Wrapped clang-specific pragma into an #ifdef block.

MSVC was complaining about an unknown pragma.
Fixed minor style issues.
Combined conditions
BioGen: TwoLevel is now fully settable in INI.
Merge pull request #1465 from Masy98/blocks

Added barriers correctly
Fixed another redstone crash.
QtBiomeVisualiser: fixed compilation.