Log Message:
Update x11/dmenu to 4.7.

Changes:
4.7
===
New features
------------
- Add embedding support with -w option.
  This option can be used to xembed dmenu into an application. This is
  useful in particular for surf.
- config.h: add config option for word delimiters.

Noteworthy fixes
----------------
- die() on calloc failure.
- Sync new drw from libsl and minor fixes.
- arg.h: fixed argv checks order.
- Regression fix: Do not crash on e.g. dmenu < /dev/null
- Shut up glibc about _BSD_SOURCE being deprecated.
- Xinerama: correct variable declarations in preprocessor conditional.
- Small man page improvements.

Thanks in particular to the contributors
----------------------------------------
- Andrew Gregory
- Klemens Nanni
- Lucas Gabriel Vuotto
- Markus Teich
- Quentin Rameau
- S. Gilles
- Thomas Gardner