Proposal: log binary data for Solidity

The program_id is not needed on "Program return data: " because it
always preceeded by the program invoke message, so no need to repeat
the program id. Also rename this to "Program return: " since "data"
is redundant.

programs/bpf/build.rs

@@ -67,6 +67,7 @@ fn main() {
             "deprecated_loader",
             "dup_accounts",
             "error_handling",
+            "log_data",
             "external_spend",
             "finalize",
             "instruction_introspection",