Info proc API

Summary

• .proc_version_info

• .proc_instance_info

• .proc_raft_info

• .proc_runtime_info

• fix: use compat.c_func_iproto_multireturn = 'new'

  • Note: this changes return values from all .proc_* stored procedures, making them more usable, but completely breaking the compatibility with older versions.

Part of #467 (closed)
Closes #500 (closed)

Needs sbroad!376 (merged)

---

• Target branch: master
• Docs follow-up: not necessary / new issue

src/cli/test.rs

@@ -126,6 +126,13 @@ fn test_one(test: &TestCase) {
     let temp = tempfile::tempdir().expect("Failed creating a temp directory");
     std::env::set_current_dir(temp.path()).expect("Failed chainging current directory");
 
+    tarantool::exec(
+        "require 'compat' {
+            c_func_iproto_multireturn = 'new',
+        }",
+    )
+    .unwrap();
+
     let cfg = tarantool::Cfg {
         listen: Some("127.0.0.1:0".into()),
         read_only: false,