cmus: remove CFLAGS code
ecl 13.5.1

Closes #21775.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
selenium-server-standalone 2.34

Closes #21776.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
grads: point to documentation in caveats
luarucks: unconditionally apply patch

Unconditionally apply patch to skip +w testing, and try to
document it better.