improve invalid member reference diagnostics to print the type and 
have better source ranges.  Before:

t.m:11:53: error: member reference is not to a structure or union
    CGFloat maxOffsetY = [_outlineLayer contentSize].height - [_outlineLayer frame].size.height;
                                                    ^~~~~~~

after:

t.m:11:54: error: member reference base type ('id') is not a structure or union
    CGFloat maxOffsetY = [_outlineLayer contentSize].height - [_outlineLayer frame].size.height;
                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@53834 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed