This reverts commit a4240a422b.

This reverts commit cb3f58ad06.

This reverts commit 716233534b.

It causes issues with truncation of characters when the text does not fit and
so on.  The patch should be reworked and properly tested.

Calculates len & ew in drw_font_getexts loop by incrementing instead of
decrementing; as such avoids proportional increase in time spent in loop
based on provided strings size.

Some people are annoyed to have this new behaviour forced for some
application which use fake fullscreen.

It generally doesn't make much sense to allow focusstack() to navigate
away from the selected fullscreen client, as you can't even see which
client you're selecting behind it.

I have had this up for a while on the wiki as a separate patch[0], but
it seems reasonable to avoid this behaviour in dwm mainline, since I'm
struggling to think of any reason to navigate away from a fullscreen
client other than a mistake.

0: https://dwm.suckless.org/patches/alwaysfullscreen/

The function drw_fontset_free in drw.c was never called.