databases/cego: update 2.49.8 -> 2.49.9, devel/lfcbase: 1.18.6 -> 1.18.7

lfcbase:
- Added patch in Matcher.cc to support extended regular expression
  (added REG_EXTENDED flag to regcomp call )

cego:
- Added dedicated admin command to show query cache information
  including hit rate ( show querycache for tableset )
  This will replace the querycache information shown with general
  show tableset admin
  command
- Added patch for memory leak in CegoSelect. Within
  CegoSelect::consolidateConjunctionList method, predicate and condition
  instances are created for conjunction organisation. These instances
  have to be registered and freed later within CegoSelect::cleanUp
- Rework of table cache logic, which is still experimental. A table
  filter now can be defined to just cache a specified subset of tables.
  Since table cache is just useful for specific tables with read only
  flavor and medium size, this extension seems to makes sense. Cached
  table rows can be accessed directly without accessing buffer pool
  pages and without decoding. This might accelerate some database
  configurations, where query cache is not appropriate and hot spot
  readonly tables have to access very often and very fast.