Update Protobuf and add protos for CS2 (#176)

* Replace protobuf 2.6.1 with 3.21.8

* Update/add protobuf libs

* Add CS2 protos

* Remove old csgo/dota protos

* Add versioned protoc bin

* Comment out Valve's `schema` define for now

* Use ENetworkDisconnectionReason

* Fix-up `offsetof` to avoid errors on some Clang versions

thirdparty/protobuf-3.21.8/kokoro/linux/make_test_output.py

@@ -0,0 +1,94 @@
+"""Gathers output from test runs and create an XML file in JUnit format.
+
+The output files from the individual tests have been written in a directory
+structure like:
+
+  $DIR/joblog  (output from "parallel --joblog joblog")
+  $DIR/logs/1/cpp/stdout
+  $DIR/logs/1/cpp/stderr
+  $DIR/logs/1/csharp/stdout
+  $DIR/logs/1/csharp/stderr
+  $DIR/logs/1/java_jdk7/stdout
+  $DIR/logs/1/java_jdk7/stderr
+  etc.
+
+This script bundles them into a single output XML file so Jenkins can show
+detailed test results.  It runs as the last step before the Jenkins build
+finishes.
+"""
+
+import os
+import sys
+from yattag import Doc
+from collections import defaultdict
+
+
+def readtests(basedir):
+  tests = defaultdict(dict)
+
+  # Sample input (note: separators are tabs).
+  #
+  # Seq	Host	Starttime	Runtime	Send	Receive	Exitval	Signal	Command
+  # 1	:	1456263838.313	0.005	0	0	0	0	echo A
+  with open(basedir + "/joblog") as jobs:
+    firstline = next(jobs)
+    for line in jobs:
+      values = line.split("\t")
+
+      name = values[8].split()[-1]
+      test = tests[name]
+      test["name"] = name
+      test["time"] = values[3]
+
+      exitval = values[6]
+      if int(exitval):
+        # We don't have a more specific message.  User should look at stderr.
+        test["failure"] = "TEST FAILURE"
+      else:
+        test["failure"] = False
+
+  for testname in os.listdir(basedir + "/logs/1"):
+    test = tests[testname]
+
+    with open(basedir + "/logs/1/" + testname + "/stdout") as f:
+      test["stdout"] = f.read()
+
+    with open(basedir + "/logs/1/" + testname + "/stderr") as f:
+      test["stderr"] = f.read()
+
+  # The cpp test is special since it doesn't run under parallel so doesn't show
+  # up in the job log.
+  tests["cpp"]["name"] = "cpp"
+
+  with open(basedir + '/logs/1/cpp/build_time', 'r') as f:
+    tests["cpp"]["time"] = f.read().strip()
+  tests["cpp"]["failure"] = False
+
+  ret = tests.values()
+  ret.sort(key=lambda x: x["name"])
+
+  return ret
+
+
+def genxml(tests):
+  doc, tag, text = Doc().tagtext()
+
+  with tag("testsuites"):
+    with tag("testsuite", name="Protobuf Tests"):
+      for test in tests:
+        with tag("testcase", name=test["name"], classname=test["name"],
+                             time=test["time"]):
+          with tag("system-out"):
+            text(test["stdout"])
+          with tag("system-err"):
+            text(test["stderr"])
+          if test["failure"]:
+            with tag("failure"):
+              text(test["failure"])
+
+  return doc.getvalue()
+
+
+sys.stderr.write("make_test_output.py: writing XML from directory: " +
+                 sys.argv[1] + "\n")
+print(genxml(readtests(sys.argv[1])))