Before, this lua code led to a crash:

local pcg = PcgRandom(42)
local value = pcg:next()

This was because if you called s32 PcgRandom::range(min, max) with the
minimum and maximum possible values for s32 integers (which the lua
binding code did), u32 PcgRandom::range(bound) got called with 0 as the
bound. The bound however is one above the maximum value, so 0 is a "special"
value to pass to this function. This commit fixes the lua crash by
assigning the RNG's full range to the bound 0, which is also fits to the
"maximum is bound - 1" principle, as (u32)-1 is the maximum value in the
u32 range.

Also misc. minor cleanups

Currently translated at 100.0% (270 of 270 strings)

Currently translated at 91.1% (246 of 270 strings)

Currently translated at 100.0% (270 of 270 strings)

Currently translated at 100.0% (270 of 270 strings)

Currently translated at 100.0% (270 of 270 strings)

Currently translated at 100.0% (270 of 270 strings)

Currently translated at 100.0% (270 of 270 strings)

Currently translated at 99.6% (269 of 270 strings)

Currently translated at 96.2% (260 of 270 strings)

Currently translated at 96.2% (260 of 270 strings)

Currently translated at 99.6% (269 of 270 strings)

Currently translated at 96.2% (260 of 270 strings)

This fixes bug 1551

This was caused by the use the non-threadsafe SharedBuffer in a
threaded context.

When tunnels entirely above ground were avoided, the
missing pseudorandom calls changed the allowed caves.
Now, above ground tunnels are not placed while
still running all previous pseudorandom calls.

Before players "bounced" too high. Now, while still allowing to bounce, higher speed bounces are throttled.

Previously, sound failed due to errors with hardfp abi build
instructions. As the problem couldn't be found, the softfp
compatible abi was chosen instead.

This move will cause a small performance overhead, but due to the
abi being armeabi-v7a, the internal calculations will still be done
using the FPU.

We also fix some issues with ABI information passing. However, the
fixes aren't sufficient to get sound working.

The patch also fixes an issue with the gitignore file.

src/server.cpp
src/emerge.cpp