objectiveC: don't warn when in -Wselector mode and
an unimplemented selector is consumed by
"respondsToSelector:". // rdar://12938616


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173097 91177308-0d34-0410-b5e6-96231b3b80d8
Have AttributeSet::getRetAttributes() return an AttributeSet instead of Attribute.

This further restricts the use of the Attribute class to the Attribute family of
classes.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173099 91177308-0d34-0410-b5e6-96231b3b80d8
Remove "incorrect" aligning of trailing comments.

We used to align trailing comments belong to different things.
Before:
void f() { // some function..
}
int a;     // some variable..

After:
void f() { // some function..
}
int a; // some variable..

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173100 91177308-0d34-0410-b5e6-96231b3b80d8