directory/path names by using BUILD variable ("debug"/"release").

Setting env var for CFLAGS (if specified).

The MKFLAGS+=CFLAGS line is only added to the generated makefile if
CFLAGS is non-blank.

eliminates gcc compile warning: "multi-line string literals are deprecated".

this fixes problem with non-blocking socket returning EWOULDBLOCK.

without prompting the user (for automated configuration changes via script).

Bugfix: default DNSServer key in sbbs.ini over-rode /etc/resolv.conf file.

Added instructions for updating an existing installation.
Simplified cvs command-lines.

The CtrlDirectory key read out of the sbbs.ini file is used for the load_cfg()
call.

Added copyright comment header.

target platform.

Eliminated unused function: readline_alloc().

or longer, uses a passed 'buflen' parameter to determine the truncation point.