Various improvements: project caption in editor, castle_indy package, CThreads, etc.

[DP News-Robot]

Various important improvements done lately in Castle Game Engine: You can set project caption when creating a new project in CGE editor. Our CastleClientServer unit (for TCP/IP networking) has been moved to a new Lazarus package castle_indy that depends on indylaz package. This makes our connection to Indy cleaner, and fixes the client/server example compilation. …