IDE: fixed macro FPCVer for multiple versions used by fpc.exe
IDE: fixed rescan of FPC sources if not changed, bug #16824
codetools: replaced fpc source heuristic with rule set, needed for bug #13912, #14572
IDE: fixed unneeded rescan of fpc sources if only target changed, needed for 12828
IDE: fixed calling compiler on every start, needed by lazarus on a stick
codetools: fixed search for fpc units without ppu, needed for 15534
IDE: implemented cache for fpc include files, needed by debugger
lazbuild: fixed using non default lclwidgettype of lpi
IDE: fixed auto update if fpc.cfg or target compiler changed, needed for 16824
git-svn-id: trunk@26796 -