Move docs for -Wuse-after-free and -Wuseless-cast [PR111693]
These options were categorized as C++ options, but they apply to all
C-family languages.
gcc/ChangeLog
PR c/111693
* doc/invoke.texi (Option Summary): Move -Wuseless-cast
from C++ Language Options to Warning Options. Add entry for
-Wuse-after-free.
(C++ Dialect Options): Move -Wuse-after-free and -Wuseless-cast
from here....
(Warning Options): ...to here. Minor copy-editing to fix typo
and grammar.