harmonize LED implementation
fix https://github.com/RIOT-OS/RIOT/issues/145
Merge pull request #24 from LudwigOrtmann/RIOT_issue_145

harmonize LED implementation
implement uart0_puts properly
improve uart0_puts
Merge pull request #23 from LudwigOrtmann/issue_147

implement uart0_puts properly
GPIO implementation was moved to RIOT/cpu/mc1322x since ADC module implementation depends on it
added missing LICENSE file
initial support for the avs-extrem-board
updated board common initialization
updated Makefiles for MSB-A2 and AVSEXTREM

* updated Makefilde dep, add the gpioint dependency to use cc110x on MSBA2
board
* updated CFLAGS Variable
drivers for the AVSEXTREM board.
fixed encoding and coding conventions
Merge pull request #25 from thomaseichinger/ADC

GPIO implementation was moved to RIOT/cpu/mc1322x