Leveldb cache (WIP) - add support for purge, remove, compact, getsize, etc.
wip
wip
leveldb: cache all bins to the same database so we can control sizing across cache bins
Leveldb: some semblance of cache size capping
add tracker file
GeoTransform: fix a bug.
Fix TerrainCallbackAdapter to automatically discard dead callbacks
Fix: linux compile error
ldb: cleanup msgs
Fix: texture matrix multiple order was wrong
DrapingTechnique: bail out if the polyhedron is invalid
LevelDB: size caps and env var overrides
Sky: properly set initial DateTime in SilverLining driver
Docs update
docs
Update leveldb.rst
Cache: add purging
Merge branch 'master' of github.com:gwaldron/osgearth
Add transform example.