2021 05 02 m1 secp256k1 natives (#3014)

* Add protoc exception for apples new chip arch. This requires protoc to be built manually as they do not natively ship m1 support yet

* Add osx_arm64 secp256k1 native binaries

secp256k1jni/natives/osx_arm64/libsecp256k1.dylib

@@ -0,0 +1 @@
+libsecp256k1.0.dylib

secp256k1jni/natives/osx_arm64/libsecp256k1.la

@@ -0,0 +1 @@
+../libsecp256k1.la

secp256k1jni/natives/osx_arm64/libsecp256k1.lai

@@ -0,0 +1,41 @@
+# libsecp256k1.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.6
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='libsecp256k1.0.dylib'
+
+# Names of this library.
+library_names='libsecp256k1.0.dylib libsecp256k1.dylib'
+
+# The name of the static archive.
+old_library='libsecp256k1.a'
+
+# Linker flags that cannot go in dependency_libs.
+inherited_linker_flags=' '
+
+# Libraries that this one depends upon.
+dependency_libs=''
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libsecp256k1.
+current=0
+age=0
+revision=0
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/usr/local/lib'

secp256k1jni/natives/osx_arm64/libsecp256k1_jni.la

@@ -0,0 +1 @@
+../libsecp256k1_jni.la

secp256k1jni/src/test/java/org/bitcoin/NativeSecp256k1Test.java

@@ -1,6 +1,8 @@
 package org.bitcoin;
 
 import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.BlockJUnit4ClassRunner;
 
 import java.math.BigInteger;
 
@@ -10,6 +12,8 @@ import static org.bitcoin.NativeSecp256k1Util.assertEquals;
 /**
  * This class holds test cases defined for testing this library.
  */
+
+@RunWith(BlockJUnit4ClassRunner.class)
 public class NativeSecp256k1Test {
 
     //TODO improve comments/add more tests