added isOOXML()

Change-Id: I9e088e1d6679297884d71604b03537b73ee3387c
in .xlsx import append a parameter for CEILING, FLOOR and WEEKNUM again

7a3b8b1a5a753627c6518b9a5b8e2a041d4d6331 switched formula parsing from
API FormulaParser::importFormula() / ApiParserWrapper::parseFormula() to
ScCompiler, which means that also FormulaFinalizer::finalizeTokenArray()
is not executed anymore and processTokens() and processParameters() that
among others handled appending Calc-only and required parameters.

At least implement that parameter part at ScCompiler now.

Change-Id: Iaa2804c82ec43dd51f781485b0e2afab8c613638