devel/lfcbase,databases/cego: update

lfcbase: 1.18.0 -> 1.18.3

• Opimization in Screen2 to customize screen refreshes ( introduced virtual method Panel::doRefresh )

cego: 2.48.15 -> 2.48.19

• Fix added for CegoAdmScreen, the data file root path was not added to new datafiles in the 'tableset add datafile mask'
• Fixes added for CegoAdmScreen, to avoid too many admin requests, backup panel and data file panel are just refreshed initially and after add objects.
• Fix added in CegoObjectManager::alterObject, the getNewFilePage has been changed to type CegoObject::SYSTEM. Otherwise, a page from a tuple datafile is allocated, which results in strange effects
• Some adaptions for extended Screen2 interface with refresh customizing.