metadata improvement, constrain to 127 byte prgms

Add private testing files to gitignore and improve metadata generation
by adding constraints.  Will now only attempt to work with 127 bytes of
code as a temporary constraint because anything larger won't work.  Move
" symbol from ASCII uppercase dictionary to ASCII symbol dictionary.
Add bytes to size in metadata creation

File size in metadata appears to be consistently 2 bytes too small (in
total 3 from the previous suspected 1 byte too small).  Fixed by adding
bytes for now.