stm: USB host mode working! Restructure stm library directories.

stm/Makefile

stm/lcd.c

stm/main.c

stm/mpconfigport.h

stm/stm32fxxx_it.c

stm/stmperiph/stm324x7i_eval.c

stm/stmperiph/stm324x7i_eval.h

stm/stmperiph/stm324x7i_eval_sdio_sd.c

stm/stmperiph/stm324x7i_eval_sdio_sd.h

stm/stmperiph/stm32f4xx.h

stm/stmperiph/stm32f4xx_adc.c

stm/stmperiph/stm32f4xx_adc.h

stm/stmperiph/stm32f4xx_conf.h

stm/stmperiph/stm32f4xx_dac.c

stm/stmperiph/stm32f4xx_dac.h

stm/stmperiph/stm32f4xx_dma.c

stm/stmperiph/stm32f4xx_dma.h

stm/stmperiph/stm32f4xx_exti.c

stm/stmperiph/stm32f4xx_exti.h

stm/stmperiph/stm32f4xx_flash.c