m68k: tweaks and fixes in n68kmem. the node is still disabled, needs further fixes in cgcpu/fixref to work properly

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28011 3ad0048d-3df7-0310-abae-a5850022a9f2
fcl-db: tests: add more data type mappings for Oracle

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28012 3ad0048d-3df7-0310-abae-a5850022a9f2