* contrib/hbzebra/tests/testhpdf.prg
* Fixed wrong drawing of 2D barcodes (Mindaugas).
* Using HPDF_Page_GetHeight() instead of hardcoded page height (Tamas).
! Delete .pdf before creating it.
* Synced caller code with cairo test.
* contrib/hbzebra/tests/testwin.prg
! Minor formatting.