stm32f1x_cl: Add initial support for STM32F1x connectivity line

This currently supports the stm32f107, but support will be added for
the F105 shortly (missing a linker script and I can't properly test
without a devkit).
stm32f107_basic: Add support for a simple stm32f107 platform

This platform is a basic waveshare stm32f107 devkit which contains a
USART, USB device port, some buttons and some LEDs.  Unfortunately not
enough to bring up networking, but enough to test building and a
simple contiki shell
stm32f1x_cl: Fix stm32f107 linker script

This is a critical fix which adds inclusion of the entire data/bss
section to the output ELF file.  Without it, the BSS section will not
be zeroed out
Enable Timer1 on Raven so that interrupts coming from radio, which are
connected to input capture, fire again.
Add missing brace in sky Makefile
Merge pull request #120 from Jeff-Ciesielski/stm32_cl

Add initial support for STM32F1x Connectivity Line devices
Merge pull request #143 from idelamer/master

Bug fix for Issue #88
Merge pull request #141 from cmorty/sky_MOTEID_missing_brace

Add missing brace in sky Makefile