TDbf 6.4.6 released

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V6.4.6

- fixed: FPC 2.0.1 implements "backward-compatible" fielddata
for datetime fields in particular (from alexandrov)
- fixed: only allow >255 field length for creating foxpro files; prevents
range check error (rep by miguel)
- fixed: memo read: check number of bytes read, clear rest for safety
- added: support for foxpro double, fieldtype 'B'
- fixed: foxpro memo pageno is binary 4 byte integer, not ascii
- added: default values are buffered, better/faster record insert
- added: support for long character fields compiletime definable
(USE_LONG_CHAR_FIELDS)
- fixed: added boolean field support in expressions (note: breaks existing)
- fixed: compilation with USE_CACHE directive
- fixed: add my own SwapWord function, because Swap seems buggy in fpc
- fixed: VCL fieldtype ftDateTime was not translated to any native type
for non dBase VII and non FoxPro (hint by paul van helden)