* keep managed types in registers if possible. Under certain circumstances (if they don't require init/final code,
  e.g. being a const parameter or immutable temp. values), managed types like dyn. arrays, new string types and interfaces can be kept in registers.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24953 3ad0048d-3df7-0310-abae-a5850022a9f2
* do not destroy the left operand in second_ansistring_to_pchar if it is a register

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24954 3ad0048d-3df7-0310-abae-a5850022a9f2