As write_buffer_to_sram() can now handles arbitrary size, use flash_pgsz chunks for writing F1 and reduce output

STM32L from programming

Page erase for STM32L needs a real write to lowest address with 0. stink_write_mem(.., ..,0) is undedined

This batch implements and exposes the single data word access, jJTAG NRST and makes the F107 work when in Sleep mode. 

Use the single word accesses in the flash inner loop too. We first swap the data, then the access routine swaps the data again, but cycles are cheep and so don't need another access function

stlink_reset(). Otherwise a sleeping device (WFI) doesn't return the
parameters.

Some cleanup patches (crashes on bad command lines, freeing of buffers, compiling dependancies...) 

Eliminate SCSI pass through, fix F1 targets again, valgrind all the goodies