AreaLimitBase.getBounds: added a function for accessing the direct bound values

This can be used for storing the bounds in the code.
AddressSpaceManager::ASAreaLimit.validAddressBoundFor: renamed checkStart to at
AddressSpaceInfoManager: get*Limits-functions should not skip the first (possibly existing) allocation limits field
Made some DEBUGmessages output newlines at the end
#2: Replaced old limits global code with one that uses AddressSpaceInfoManager