Add multi-platform jar release script

build.gradle

@@ -102,10 +102,10 @@ subprojects {
         ]
 
         signJar = { jarPath ->
-            if (rootProject.hasProperty('signingKeystore') && rootProject.hasProperty('signingPassword')) {
+            if (rootProject.hasProperty('signingKeystore') && rootProject.hasProperty('signKeyAlias') && rootProject.hasProperty('signingPassword')) {
                 def command = 'jarsigner -keystore ' + rootProject.signingKeystore +
                         ' -storepass ' + rootProject.signingPassword +
-                        ' ' + jarPath + ' signingcert'
+                        ' ' + jarPath + ' ' + rootProject.signKeyAlias
                 def process = command.execute()
                 process.waitFor()
                 if (process.exitValue()) {

openjdk/build.gradle

@@ -405,7 +405,7 @@ model {
 
     components {
         // Builds the JNI library.
-        conscrypt_openjdk_jni(NativeLibrarySpec) {
+        tongsuo_native_jni(NativeLibrarySpec) {
             nativeBuilds.each { nativeBuild ->
                 targetPlatform nativeBuild.targetPlatform()
             }

openjdk/src/main/java/org/conscrypt/NativeCryptoJni.java

@@ -28,12 +28,12 @@
  */
 final class NativeCryptoJni {
     private static final String STATIC_LIB_NAME = "conscrypt";
-    private static final String DYNAMIC_LIB_NAME_PREFIX = "conscrypt_openjdk_jni";
+    private static final String DYNAMIC_LIB_NAME_PREFIX = "tongsuo_native_jni";
 
     /**
      * Attempts to load the shared JNI library. First try loading the platform-specific library
-     * name (e.g. conscrypt_openjdk_jni-linux-x86_64). If that doesn't work, try to load the
-     * library via just the prefix (e.g. conscrypt_openjdk_jni).  If not found, try the static
+     * name (e.g. tongsuo_native_jni-linux-x86_64). If that doesn't work, try to load the
+     * library via just the prefix (e.g. tongsuo_native_jni).  If not found, try the static
      * library name.
      *
      * The non-suffixed dynamic library name is used by the Android build system, which builds