Modify library load path to include beams from package directory
Append path to local beams before all search paths
Look for imported files in same directory as proto files
Package support fixed.

Message names was resolved in wrong way when packages was specified.
Import definitions only from directly imporetd files.

TODO: support for "import public" should be added.
Merge branch 'master' of git://github.com/basho/erlang_protobuffs

Conflicts:
	src/protobuffs_compile.erl