Imported the glslCompat directly in multisample.glsllib to have it to work properly with glsl 1.5+

jme3-core/src/main/resources/Common/ShaderLib/MultiSample.glsllib

@@ -1,4 +1,5 @@
 #extension GL_ARB_texture_multisample : enable
+#import "Common/ShaderLib/GLSLCompat.glsllib"
 
 uniform int m_NumSamples;
 uniform int m_NumSamplesDepth;