Bsdconv

improve inter/{half,full}

from/UAO250
to/UAO250
split wrappers and bsdconvmv
from/NUL
to/NUL
inter/AMBIGUOUS-UNPAD
inter/BSDCONV_INFO

from/MOZ18 -> from/UAO241
to/UAO241

from/ANSI-CONTROL
from/BSDCONV_LOG
from/SKIP
inter/AMBIGUOUS-PAD
inter/BIG5-DEFRAG
to/ANSI-CONTROL
to/ASCII-HTML-INFO
to/BSDCONV_LOG
to/BSDCONV_RAW
verify SUBROUTINE in inter phases

Add to/RAW
fix bug in CNS11643 conversion
fix bug in UTF-8 decoding

Enhance table builder