Moved static method variables to static class properties
Moved static method variables to static class properties

so that there aren't many copies of them on different classes.
- Moved cached configuration $classConfigCacheEnabled
- Moved cached class hierarchies $classHierarchyCache

cargomedia/CM,fvovan/CM,fvovan/CM,zazabe/cm,mariansollmann/CM,njam/CM,cargomedia/CM,fauvel/CM,mariansollmann/CM,christopheschwyzer/CM,mariansollmann/CM,mariansollmann/CM,tomaszdurka/CM,christopheschwyzer/CM,fvovan/CM,tomaszdurka/CM,fvovan/CM,fauvel/CM,njam/CM,tomaszdurka/CM,njam/CM,zazabe/cm,vogdb/cm,alexispeter/CM,alexispeter/CM,tomaszdurka/CM,vogdb/cm,fauvel/CM,tomaszdurka/CM,njam/CM,fauvel/CM,zazabe/cm,fauvel/CM,cargomedia/CM,vogdb/cm,vogdb/cm,alexispeter/CM,alexispeter/CM,njam/CM,vogdb/cm,christopheschwyzer/CM,cargomedia/CM,christopheschwyzer/CM,zazabe/cm