Sorry for the commit but compiler warnings are annoying and so are white spaces at the end of a line, if one uses an editor which removes them on save and diff's get blown
up by white space chang

Sorry for the commit but compiler warnings are annoying and so are white spaces at the end of a line, if one uses an editor which removes them on save and diff's get blown
up by white space changes...

Changes:
- remove end of line white space
- fix compiler warning "ext/mysqli/mysqli_priv.h:156:27: warning: no newline at end of file"
- fix compiler warning "ext/mysqli/mysqli_fe.h:135:25: warning: no newline at end of file"
- fix compiler warning "ext/mysqli/mysqli.c:896:11: warning: extra tokens at end of #ifdef directive"

show more ...

Fix for bug #52654 mysqli doesn't install headers with structures it uses

Fix comment

Add iterator to mysqli_result. Works both for :
- USE_RESULT, can be iterated only once, kind of forward iterator
- STORE_RESULT, can be iterated multiple times