Add 'ConversionSpecifier' root class in 'analyze_format_string' namespace and
derived 'PrintfConversionSpecifier' from this class.  We will do the same for
'ScanfConversionSpecifier'.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108903 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed