Fix some FOSSIL functions
Function 0Ch (peek) never worked correctly (character was not returned in AX); I guess nothing uses this function (?). Function 01h (transmit char w/wait) now will set the timeout flag (0x8000) in the AX if the VDD_WRITE function fails (returns value other than 1). Optimize Function 18h (read block) - no need for the extra VDD_STATUS call. Use newly defined FOSSIL macros instead of magic numbers of port status bits. Log the git branch/hash values to the Windows debug log (via sbbsexec.dll).
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