Move ownership of loaded binary to Boomerang's core

[Artur K.]

Loader plugins should get the name and QByteArray containing the binary data of the file, this should allow us to:

• properly handle the ownership of data, and remove the redundant memory management from all loaders
• use test-contained binaries to verify loader correctness
• in the future, store binaries inside serialized project file

[Rebecca Jones]

@nemerle Perhaps a tasklist would work best instead of bullets.

[Artur K.]

ya, might as well

[Rebecca Jones]

Note automatic milestone progress.