c.opt (Wclobbered,Wempty-body,Wignored-qualifiers, [...]): Use EnabledBy.

c.opt (Wclobbered,Wempty-body,Wignored-qualifiers, [...]): Use EnabledBy.

2012-05-13  Manuel López-Ibáñez  <manu@gcc.gnu.org>

c-family/
	* c.opt (Wclobbered,Wempty-body,Wignored-qualifiers,
	Wmissing-field-initializers,Wmissing-parameter-type,
	Wold-style-declaration,Woverride-init): Use EnabledBy.
	* c-opts.c (c_common_post_options): Do not set here explicitly.
gcc/
	* common.opt (Wtype-limits): Use EnabledBy.

From-SVN: r187441