UPDATED loaddat() to handle bad .str file delimiters

.str file used to save with column headers separated by \t instead
of the actual tab. The comment handling in loaddat is now updated
to replace it with a real tab inline with reading it.

Default comment characters were also updated to treat /* lines
as comments, though this convention should be avoided in favor of
the simpler # comment.
Merge branch 'master' of github.com:cfperez/smbanalyze