Only include deps we want; rename tcnative binaries

pom file looks good, but requires hacking uploadShadow to see locally.

To use tcnative, you have to use:
-Dio.grpc.netty.shaded.io.netty.packagePrefix=io.grpc.netty.shaded.

Author: ejona86

netty/shaded/build.gradle

@@ -14,12 +14,21 @@ description = "gRPC: Netty Shaded"
 dependencies {
     compile project(':grpc-netty')
     runtime libraries.netty_tcnative
-    shadow project(':grpc-core') // TODO: why no work?
+    shadow project(':grpc-core')
 }
 
 shadowJar {
     classifier = null
+    dependencies {
+        include(project(':grpc-netty'))
+        include(dependency('io.netty:'))
+    }
     relocate 'io.grpc.netty', 'io.grpc.netty.shaded.io.grpc.netty'
     relocate 'io.netty', 'io.grpc.netty.shaded.io.netty'
+    // We have to be careful with these replacements as they must not match any
+    // string in NativeLibraryLoader, else they cause corruption. Note that
+    // this includes concatenation of string literals and constants.
+    relocate 'META-INF/native/libnetty', 'META-INF/native/libio-grpc-netty-shaded-netty'
+    relocate 'META-INF/native/netty', 'META-INF/native/io-grpc-netty-shaded-netty'
     mergeServiceFiles()
 }