Fixed issue #696 "Statistik methods with 'grid' modifier"
Implemented ticket #684 "Change the enablefuture setting"
Deleted already merged branch for tickets #665 and #681
Merged revision(s) 1113-1129 from branches/ticket_665_681: Implemented tickets #665 and #681 "Enable 'logtoidx()' and ' idxtolog()' for usual expressions" "Vector expansions are really slow"
Restructuring for #665 and #681 Updated changes log and executed all tests. Resolved remaining regressions.
Restructuring for #665 and #681 Resolved a seg fault and removed dead attributes
Restructuring for #665 and #681 Cleaned the code
Restructuring for #665 and #681 Re-enabled vector expansions
Restructuring for #665 and #681 Fixed a regression detected by the tests.
Restructuring for #665 and #681 Changed internal logic of matrix evaluations and resolved many bugs.