fpspreadsheet: Add basic currency format support to ods reading. Replace xmlread and DOM in the uses clause of fpsopendocument.pas laz2_xmlread and laz2_DOM to correctly catch the currency symbols.

git-svn-id: http://svn.code.sf.net/p/lazarus-ccr/svn@3141 8e941d3f-bd1b-0410-a28a-d453659cc2b4