STM32: ADC: FIXME: Do not set pins in analog mode without considering package size.
STM32: ADC: Driver for ADC IP used in F3 series

Did a complete rewrite because this IP is very
different from STs old ADC IP
STM32F3: ADC: enable build for stm32f3
[Regenerated Templates]
STM32F3: ADC: added example for the Discovery board
Example: STM32F3D: Set adc input pin to analog mode.
STM32F3: ADC: Overloaded & operator for Interrupt flags.
[Regenerated Templates]
Example: STM32F3D: ADC Example working with interrupts.
Merge branch 'feature/stm32_f3_support' into feature/uart_hal

Conflicts:
	src/xpcc/architecture/platform/cortex_m3/stm32.hpp
Merge branch 'feature/uart_hal' of https://github.com/roboterclubaachen/xpcc into feature/uart_hal