[xpcc-dev] Moving forward with STM32F103

Hi,

Due to the recent clock changes (https://github.com/roboterclubaachen/xpcc/commit/4b67b08ffddeb608df3d90c0595...) there are now conflicts between develop and feature/stm32f103_support_experimental, so now I'm not even able to easily merge the new changes.

Now that it's easier to manually configure the clocks, I think it would make sense to add the device and linker files (and whatever else is needed) for stm32f103 to develop, so it can be used without experimental features (but for now only with manual clock config).

What are your thoughts?

Antal