Non-static method System::tmpdir() should not be called statically, assuming  from incompatible context
OLE::LocalDate2OLE, OLE::OLE2LocalDate are static methods.

These functions are called staticly and don't use $this.
Asc2Ucs is a static method.
Merge pull request #2 from jeansebastienh/non-static-call

Fix E_STRICT errors