Format strings: suggest %lld instead of %qd and %Ld with -Wformat-non-iso.

As a corollary to the previous commit, even when an extension is
available, we can still offer a fixit to the standard modifier.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163453 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed