* fcl-db: cosmetic



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27856 3ad0048d-3df7-0310-abae-a5850022a9f2
* Enabled internal handling of Abs(longint) for all targets. It has been implemented in cross-platform way ages ago (see tcginlinenode.second_abs_long), but not enabled on MIPS,SPARC and m68k.
- RTL: removed MIPS,SPARC and m68k-specific implementations of Abs(longint), and marked the generic one as  required for bootstrapping purposes only.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@27857 3ad0048d-3df7-0310-abae-a5850022a9f2