Add eglPresentationTimeANDROID

Added EGL extension to set a timestamp on a surface.

Also, fix JNI encoding of "long" in glgen.

Bug 8191230

Change-Id: I38b7334bade3f8ff02bffe600bb74469ef22c164
diff --git a/opengl/tools/glgen/src/JniCodeEmitter.java b/opengl/tools/glgen/src/JniCodeEmitter.java
index 01c5c48..ffe3767 100644
--- a/opengl/tools/glgen/src/JniCodeEmitter.java
+++ b/opengl/tools/glgen/src/JniCodeEmitter.java
@@ -54,7 +54,7 @@
         } else if (baseType.equals("short")) {
             jniName += "S";
         } else if (baseType.equals("long")) {
-            jniName += "L";
+            jniName += "J";
         } else if (baseType.equals("byte")) {
             jniName += "B";
         } else if (baseType.equals("String")) {