* perform -CTlowercaseprocstart conversion it tprocsym.create rather than
    when building the mangled name, because the latter can also be performed
    when compiler another unit (and therefore if that other unit's setting
    is different from that of the original unit, a wrong mangled name was
    generated) + test for this case

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25388 3ad0048d-3df7-0310-abae-a5850022a9f2