Merge feat/p4-devices

# Conflicts:
#	src/client/client_send.c
#	src/server/receiver.c
#	src/shared/chunk.c
#	src/shared/file.c
#	src/shared/file_receive.c
#	src/shared/file_receive.h
#	src/shared/file_types.h
#	src/shared/protocol.h
#	tests/test_chunk.c

src/shared/file.c

@@ -116,6 +116,9 @@ File* file_create(const char* path) {
   file->hardlink_target = NULL;
   file->is_symlink = false;
   file->symlink_target = NULL;
+  file->is_special = false;
+  file->rdev_major = 0;
+  file->rdev_minor = 0;
   return file;
 }