target.mk back with -fno-short-double
Fix of vaarg alignment addr calc
Revert "Added comment to spi.c"

This reverts commit 28aae2c42776e9c2719669167a6ddb67d5dd8e52.
Revert "Added comment to spi.c"

This reverts commit 28aae2c42776e9c2719669167a6ddb67d5dd8e52.
Original spi.c and spi.h
New SPI IOCTL modi - R,W,RB,WB,RWB
Fix of 16byte stack alignment, doprnt.c does not require va_arg fix now