Gradle: Create jbigi configuration

installer/build.gradle

+configurations {
+    jbigi
+}
+
 sourceSets {
     main {
         java {
             srcDir 'java/src'
         }
     }
+    jbigi {
+        resources {
+            srcDir 'lib/jbigi'
+            include '*.so'
+            include '*.dll'
+            include '*.jnilib'
+        }
+    }
 }
 
 dependencies {
@@ -20,3 +32,12 @@ jar {
         attributes 'Main-Class': 'net.i2p.installer.Main'
     }
 }
+
+task jbigiJar(type: Jar) {
+    baseName = 'jbigi'
+    from sourceSets.jbigi.output
+}
+
+artifacts {
+    jbigi jbigiJar
+}