Regenerate *.rs files in `src/proto/`

for new protobuf version 2.10.0

src/proto/fileformat.rs

-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.10.0. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_10_0;
 
 #[derive(PartialEq,Clone,Default,Debug)]
 pub struct Blob {

src/proto/osmformat.rs

-// This file is generated by rust-protobuf 2.8.1. Do not edit
+// This file is generated by rust-protobuf 2.10.0. Do not edit
 // @generated
 
 // https://github.com/Manishearth/rust-clippy/issues/702
 
 /// Generated files are compatible only with the same version
 /// of protobuf runtime.
-const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_1;
+const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_10_0;
 
 #[derive(PartialEq,Clone,Default,Debug)]
 pub struct HeaderBlock {