char can be signed, resulting in totally bogus results when converting atoms to and from strings. Also, fixed a serious off-by-one error in the fromstr code.
char can be signed, resulting in totally bogus results when converting
atoms to and from strings.
Also, fixed a serious off-by-one error in the fromstr code.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb