Implement resolving of HTML character references (named: &, decimal: *,
hex: ) during comment parsing.

Now internal representation of plain text in comment AST does not contain
character references, but the characters themselves.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160891 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed