Changed Brazilian Portuguese langauge file from pt/br to pt-BR (portable
to all environments).
Patched character set conversion to only convert if the character set is
iso-8859-1.
If General Summary lines are missing in report data, then some text may
be excluded (like "Statistics generated on...") rather than included with
no useful data.
Fixed a bug where 0 bytes would be formatted as 'B' rather than '0 B.'
Fixed bug in floor statements where numeric parameters were not replaced.
Fixed bug where REPORTSPAN times were getting double formatted.
Fixed bug where 2d graphs didn't include background color, when defined.