Set source and target version to Java 6 in subprojects.

briar-android/briar-android.iml

@@ -59,18 +59,6 @@
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/assets" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/blame" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/classes" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/dependency-cache" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/incremental" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jniLibs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/manifests" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/pre-dexed" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/res" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/rs" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/symbols" />
-      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/transforms" />
       <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
       <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
     </content>

briar-api/briar-api.iml

@@ -28,6 +28,5 @@
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" exported="" name="guice-3.0-no_aop" level="project" />
     <orderEntry type="library" exported="" name="javax.inject" level="project" />
-    <orderEntry type="library" exported="" name="briar-api.briar-api" level="project" />
   </component>
 </module>
\ No newline at end of file

briar-api/build.gradle

 apply plugin: 'java'
+sourceCompatibility = 1.6
+targetCompatibility = 1.6
 
 dependencies {
     compile fileTree(dir: 'libs', include: '*.jar')

briar-core/briar-core.iml

@@ -32,6 +32,5 @@
     <orderEntry type="library" exported="" name="h2small-1.4.190" level="project" />
     <orderEntry type="library" exported="" name="spongy-core-1.53" level="project" />
     <orderEntry type="library" exported="" name="weupnp-0.1.3-SNAPSHOT-briar" level="project" />
-    <orderEntry type="library" exported="" name="briar-core.briar-core" level="project" />
   </component>
 </module>
\ No newline at end of file

briar-core/build.gradle

 apply plugin: 'java'
+sourceCompatibility = 1.6
+targetCompatibility = 1.6
 
 dependencies {
     compile fileTree(dir: '../briar-api/libs', include: '*.jar')

briar-desktop/build.gradle

 apply plugin: 'java'
+sourceCompatibility = 1.6
+targetCompatibility = 1.6
 
 dependencies {
     compile fileTree(dir: '../briar-api/libs', include: '*.jar')

briar-tests/build.gradle

 apply plugin: 'java'
+sourceCompatibility = 1.6
+targetCompatibility = 1.6
 
 dependencies {
     compile fileTree(dir: '../briar-api/libs', include: '*.jar')