Increases the key/buttons repeat delay for fly, noclip, fast, debug and camera buttons

This feature is still experimental and has some issues. Also,
increase texture_min_size to 64 px. The setting was initially
a conservative 16 so that the effect would not be noticable
for players who aren't using aniso/bi/trilinear filtering. This
isn't necessary now that texture_clean_transparent is disabled
by default.

Remove the --system=linux-x86_64 which isn't neccessary on 64 bit,
as, when given no --system parameter, the standalone-toolchain.sh script
figures out the platform on itself. Naturally, the hardcoded setting broke
android building on 32 bit systems.

Previously, cmake po detection would treat the "timestamp" file created by building for android as own language directory.

Previously, calling it resulted in a crash.

Sometimes HUD can be modified by ServerThread and EmergeThread results in a crash on client side because the HUD is not correct

Fixes biome layer at y = 47 when base/alt terrain exceeds it
Also fixes missing dust glitch at y = 47
Mgv5/mgv7:Cleanup code

This reverts commit 467fc0dd.

Remove unused ConnectionCommand::sendToAll function. NetworkPacket::oldForgePacket returns Buffer instead of SharedBuffer and is used in ConnectionCommand instead of Connection::Send
This remove the NetworkPacket buffer => SharedBuffer => Buffer copy. Now NetworkPacket => Buffer

This call was missing when change looping to triggering SendInventory: 1b2f6447

Fix composite textures with texture_min_size. Moved upscaling of textures to later in the process, when images are converted to textures, instead of right after image load, so the original image is unmodified for generateImagePart.

Signed off by: ShadowNinja, kwolekr

Signed off by: Zeno, kwolekr

Revert "Fix issue #2441: crash on respawn, since a conversion std::list to std::vector on Environment.cpp"

This reverts parts of commit 9749d9fe, which breaks node resolver
list clearing

Mgv5: Add large_cave_depth constant

This was a regression introduced by f6e4c5d9 .

Desert stone above y = -32 not water_level
Remove unused generateExperimental()

Create Parameters on world initialisation and set settings of old worlds

Replace it with an errorstream + assert for server

This throw can be trigger by LuaError exception or ConnectionBindFailed exception in the following functions:
* EmergeThread::Thread()
* ScriptApiEnv::environment_Step()
* ScriptApiEnv::player_event()
* ServerThread::Thread()

Use the NetworkPacket api to read full version string instead of u8 pointers. Also store the reserved byte to use API properly

Fixes #2509

Fix a little regression on SendActiveObjectMessages which send all TOCLIENT_ACTIVE_OBJECT_MESSAGES as reliable

E.g. spawning or teleporting into lava to become invinsible

* Sort includes
* Remove unnecessary includes
* Ensure the parameter name for GameRunData is consistent for class member functions

This reverts commit 5f8e48c6.