Fix error initializing EOL.
Fix problem in EOL handling.
Move arg2scb to syshs.c, its only point of use. Also move sioarg to sysfc.c, its only point of use.
This is start of cleanup of c-string handling in osint to prepare to support full unicode.
Move content of doexec.c to sysxi.c, its only point of use.
More on unicode support. Add ud.c with unicode/c interface routines.
more work on unicode support
Remove the date check function sysdc. This was used for trial copies when SPITBOL
was a commercial product and is no longer needed.
more on unicode support. Simplify syshs and sysid code, dropping gethost.c as part of that.