boards/avsextrem: purge FEUERWARE_CONF_BOARD_NAME
boards/avsextrem: purge FEUERWARE_CONF_CORE_SUPPORTS_FILES
cpu/lpc2387: purge FEUERWARE_CONF_CORE_SUPPORTS_TIME
board/avsextrem, cpu/lpc2387: purge FEUERWARE_CONF_CPU_NAME
cpu/arm_common: purge FEUERWARE_CONF_ENABLE_HAL
boards/avsextrem: purge FEUERWARE_CONF_SUPPORTS_FILES
boards/avsextrem: remove configure.h, it's unused
drivers/cc110x: remove unused FEUERWARE_CPU_MSP430 include
drivers/cc110x: fix duplicate length member
cpu/lpc2387, drivers/cc110x: purge FEUERWARE_CPU_LPC2387

* includes were superfluous
* unused otherwise
Merge pull request #1893 from LudwigOrtmann/purge_allthefeuerware

Remove all feuerware occurrences