This function copies a BSTR into a null terminated string. The BCPL string is passed as an unconverted icky BCPL ptr.
INPUTS
CString
Pointer to a buffer area for the resulting string.
BSTR
BPTR to the BSTR to convert.
MaxLength
Maximum number of characters in buffer (not including NULL terminator).
RESULT
Count -- Actual number of characters copied. A0 has START of C string for assembly convenience. ADDITIONAL NOTES: This function does NOT require A6 to be ArpBase. This info if for internal (library) use only! Within the Arp library you can bsr CtoBStr without setting A6 = ArpBase.