* made internalerror unique

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27165 3ad0048d-3df7-0310-abae-a5850022a9f2
  * fixed warning/compilation

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27166 3ad0048d-3df7-0310-abae-a5850022a9f2
  + support for nested classes in the WPO devirtualisation and VMT
    optimization infrastructure (mantis #25869)

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27167 3ad0048d-3df7-0310-abae-a5850022a9f2