changed source compatibility only for lwjgl3

common.gradle

@@ -8,7 +8,7 @@ apply plugin: 'maven'
 group = 'org.jmonkeyengine'
 version = jmePomVersion
 
-sourceCompatibility = '1.8'
+sourceCompatibility = '1.7'
 [compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
 
 repositories {

jme3-lwjgl3/build.gradle

@@ -4,6 +4,8 @@ if (!hasProperty('mainClass')) {
 
 def lwjglVersion = '3.0.0'
 
+sourceCompatibility = '1.8'
+
 dependencies {
     compile project(':jme3-core')
     compile project(':jme3-desktop')