* sort.c (backtrace_qsort): Use middle element as pivot.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@208403 138bc75d-0d04-0410-961f-82ee72b054a4
	* c.opt: Add -std=c++14.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@208404 138bc75d-0d04-0410-961f-82ee72b054a4