requires conv.c and wchar.c
wstrcmp.c: strcmp for mb
wstrncmp.c: strncmp for mb
-varable.c: public functions for show/set/reset variable commands
alt.c: a tool to generate KOI8 <--> CP866 conversion table
iso.c: a tool to generate KOI8 <--> ISO8859-5 conversion table
win.c: a tool to generate KOI8 <--> CP1251 conversion table