* DSNLEXER::NextTok() now uses two separate modes to parse quoted strings.
This gives us the freedom to control our own destiny separate from the
constraints put on us by the Specctra DSN spec.
* Added Documentation/s-expressions.txt to explain all this.
* Enhanced our quoting protocol by moving away from doubling up double quotes
to a C line escape mechanism.
* Now support multi-line strings, which when properly escaped, can still be
read in as a token originating on a single line.
Dick Hollenbeck