Moved all buffers into a subdirectory
Moved all wayland objects into their own folder
Fixed relative includes and order
Merge pull request #222 from TheNeikos/reorganize-compositor

Reorganize compositor
Move objects/message.{c,h} to new subdirectory
Add transaction type header
Add transaction type stubs
Add objects/message/transaction.c to CMakeLists.txt
Add implementation of ws_transaction_new()
Add implementation for ws_transaction_connection_id()
Add implementation of ws_transaction_set_connection_id()
Add implementation of ws_transaction_flags()
Add implementation of ws_transaction_name()
Add implementation of ws_transaction_commands()