opengl emulator: Added gl error tracking on the guest (encoder)

Sometimes we need to check parameter values before encoding
to prevent crashes, for example:
glDeleteBufferes(-1, ptr); - would crash
For that we need to check some gl errors on the guest.

The change adds error state to the encoder and also
adds new feature to emugen which allows to insert
parameter check code into the attribute file.
Added such parameter check code in the appropiate
gl functions in gl.attrib and gl2.attrib

Change-Id: I7f317df52ac8fbd96979100a1031cf023a0b49d3

tools/emulator/opengl/shared/OpenglCodecCommon/gl_base_types.h

@@ -48,4 +48,15 @@ typedef char *GLstr;
 /* JR XXX Treating this as an in handle - is this correct? */
 typedef void * GLeglImageOES;
 
+/* ErrorCode */
+#ifndef GL_INVALID_ENUM
+#define GL_NO_ERROR                       0
+#define GL_INVALID_ENUM                   0x0500
+#define GL_INVALID_VALUE                  0x0501
+#define GL_INVALID_OPERATION              0x0502
+#define GL_STACK_OVERFLOW                 0x0503
+#define GL_STACK_UNDERFLOW                0x0504
+#define GL_OUT_OF_MEMORY                  0x0505
+#endif
+
 #endif