Makefile will now build zlib and/or OpenSSL if needed.

-) Detecting system and embedded presence of zlib and OpenSSL with ALPN.
-) Automatically disabling secure targets if no OpenSSL present
--> make all won't work if no OpenSSL is present, forcing the users to select the nonsecure Makefile targets explicitely.
-) Removing build instructions for OpenSSL - this isn't really necessary anymore.
-) Adding more blurb about OpenSSL and the new Makefile features.
	Change on 2014/12/12 by nnoble <nnoble@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=82020890
diff --git a/build.json b/build.json
index 15d7385..c8f7b6b 100644
--- a/build.json
+++ b/build.json
@@ -289,7 +289,7 @@
         "test/core/end2end/cq_verifier.c",
         "test/core/endpoint/endpoint_tests.c",
         "test/core/transport/transport_end2end_tests.c",
-        "test/core/statistics/log_tests.c"
+        "test/core/statistics/census_log_tests.c"
       ]
     },
     {
@@ -372,6 +372,7 @@
       "name": "cpp_plugin",
       "build": "protoc",
       "c++": true,
+      "secure": false,
       "src": [
         "src/compiler/cpp_plugin.cpp",
         "src/compiler/cpp_generator.cpp"
@@ -386,6 +387,7 @@
       "name": "ruby_plugin",
       "build": "protoc",
       "c++": true,
+      "secure": false,
       "src": [
         "src/compiler/ruby_plugin.cpp",
         "src/compiler/ruby_generator.cpp"