Using extension-less #include files brought more issues than it was
worth.
Reverts: dfa34420d9ff29932f1e7d06bb98f1f757373bd5
Signed-off-by: Simon Rozman <simon@rozman.si>
Being portable, means having all function implementations in #include
files and functions marked as static. We have no global functions in
this project yet, but it took me quite some head scratching in WinStd
project why all the global functions are missing in the documentation.
Signed-off-by: Simon Rozman <simon@rozman.si>