* use add/sub instead of inc/dec on modern CPUs when optimizing for speed

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25057 3ad0048d-3df7-0310-abae-a5850022a9f2
* default value for max_linear_list on i386

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25058 3ad0048d-3df7-0310-abae-a5850022a9f2
* cleanup of unused units

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25059 3ad0048d-3df7-0310-abae-a5850022a9f2
* adapt max_linear_list on x86-64 as well

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25060 3ad0048d-3df7-0310-abae-a5850022a9f2