Renamed some boards with better names

CMakeLists.txt

miosix/_doc/textdoc/stm32-bootloader.txt

miosix/_examples/sad_trombone/Readme.txt

...ortexM0_stm32f0/common/interfaces-impl/portability_impl.h

...texM0_stm32f0/stm32f072rb_discovery/core/stage_1_boot.cpp

...xM0_stm32f0/stm32f072rb_discovery/interfaces-impl/bsp.cpp

..._stm32f0/stm32f072rb_discovery/interfaces-impl/bsp_impl.h

...texM0_stm32f0/stm32f072rb_discovery/stm32_128k+16k_rom.ld

...rtexM0_stm32f0/stm32f072rb_discovery/stm32vldiscovery.cfg

...ortexM3_efm32gg/common/interfaces-impl/portability_impl.h

...ortexM3_stm32f1/common/interfaces-impl/portability_impl.h

...texM3_stm32f1/stm32f100rb_discovery/core/stage_1_boot.cpp

...xM3_stm32f1/stm32f100rb_discovery/interfaces-impl/bsp.cpp

..._stm32f1/stm32f100rb_discovery/interfaces-impl/bsp_impl.h

...rtexM3_stm32f1/stm32f100rb_discovery/stm32_128k+8k_rom.ld

...rtexM3_stm32f1/stm32f100rb_discovery/stm32vldiscovery.cfg

...exM3_stm32f1/stm32f103ze_evaluation/core/stage_1_boot.cpp

...M3_stm32f1/stm32f103ze_evaluation/interfaces-impl/bsp.cpp

...stm32f1/stm32f103ze_evaluation/interfaces-impl/bsp_impl.h

...32f1/stm32f103ze_evaluation/stm32_512k+64k_all_in_xram.ld