bring read-line max-length fix from chibi
trim out some stuff that r7rs made redundant.  added read-latin-1-char and pals
treat network ports as binary
minimize patch size between this and chicken's version
network ports are binary
these are replaced by read-string and read-bytevector in r7rs
handle binary ports
read-latin-1-char can handle binary or textual ports
read-latin-1-char can handle binary or textual ports
gauche reader hates #!key, so just comment this stuff out
add read-latin-1-string
added read-all-latin-1-chars
added read-all-latin-1-chars
fix chibi's make-delimited-input-port
fix chibi's make-delimited-input-port
various fixes, handle socket ports being binary
sync