voxelands-1709.00-bp155.2.13

- Use latest libpng

- Use pkg-config information to set PNG_PNG_INCLUDE_DIR for cmake

- use freetype2-devel explicitly. was pulled in and used implicitly already.

- update to version 1709.00

- update to version 1608.01
  * Lighting of dirtlike nodes has been fixed (by blockmaster2000)
  * Redone mob spawning, to fix the overpopulation problem (by darkrose)
  * Dungeons now spawn with chests (by darkrose)
  * Scaffolding no longer suffocates you (by Capricorn)
  * The client should fetch the serverlist correctly now
  * Rats (previously disabled) now spawn

- update to version 1608.00

- initial packaging of version 1602.00