Update database format to support inclusions
All of the new tables are now present
Ints are 64-bit on 64-bit platforms so this is OK for now
Hooked up events for writing to the new databases
Add support for the new database tables to the indexing code
Indexing of inclusions now works
We now reindex includers when the included file changes
Index header files included by new source files automatically
Fix inclusion handling
Don't check whether header files are out-of-date twice
Lower the priority of pygclangindex. Closes #36
Add AST display command
Don't reindex header files directly, only their includers
Add multiple database channels so queries can have priority
Rename CountingChan to LenChan
Add callLenChan to abstract the return-with-MVar pattern
Pygmake now pings pygd before doing anything else
Implemented find callers
Finish implementing get callers
Cleaned up RPC.Client