STM32F3 initial periphial driver implementation
Removed periphial_conf from STM32F3 cpu
Updates to system Makefiles
Update on STM32F3 cpu implementation
Renamed MAX_TIMERS macro to HWTIMER_NUMOF
Updated STM32F3-discovery implementation
Initial import of low-level GPIO driver interface
Initial import of low-level timer driver interface
Initial import of low-level ADC driver interface
Fixed typo in ADC_NUMOF macro
Changed linkerscript to be defined by cpu Makefile.include
Linkerscript and startupcode playaraound
Added Makefiles for STM32F3 std-periph lib

- download the lib as external package
- include selected headers from the lib
- build the lib to be linked against RIOT
altered stm lib Makefile
STM32F3 linkerscript playground
Initial import of low-level UART driver interface
Fixed spelling
CLEANUP-1 removal of temporal and moved files
CPU-STM32F3 working fileset
BOARD stm32f3discovery: working fileset