Added .rb to the Engine-file-searching code
Added .rb to the Engine-file-searching code

git-svn-id: 982b27da35e213861580d839d0447637f2645314@63 61cc408d-6c04-0410-aff7-b3608aa29ce9

lightningdb/engines,lazyatom/engines,asapnet/engines,thewoolleyman/engines,lazyatom/engines