- Move BasicReader/Writer from fpspreadsheet.pas to fpsReaderWriter.pas in order to fix circular unit dependence introduced in prev commit.
- Remove usage of temp file in xlsx and ods stream writers (see forum forum.lazarus.freepascal.org/index.php/topic,30606.msg194818.html).
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@4398 8e941d3f-bd1b-0410-a28a-d453659cc2b4