* contrib/hbhpdf/core.c
+ HPDF_GetPageByIndex( hDoc, nIndex ) --> hPage / NIL
suggested by Luigi Ferraris
* contrib/hbhpdf/tests/harupdf.prg
+ test the above (disabled by default)
* README.md
* updated CI badge(s) to GitHub Actions - they also cover
the strict compilation mode, definitions are currently
located in the same file as normal
! cleaned up links, mostly in tools section, some were
broken, for others switched to https where applicable
* mention HB_CCPREFIX= support for clang
* contrib/hbdoc/hbdoc.prg
* contrib/hbformat/utils/hbformat.prg
* contrib/hbnetio/utils/hbnetio/hbnetio.prg
* package/harbour.mft
* package/harbour.rc
* src/compiler/hbusage.c
* utils/hbi18n/hbi18n.prg
* utils/hbtest/hbtest.prg
* bumped copyright year to 2025
57c06eb936