Changes

GLContext.hasNoDefaultVAO(): Remove ES 3.x, fixing issues w/ ES 3.x client side vertex arrays

Commit 6136457f10d020c779adc78641d0048f77ab1635 defined hasNoDefaultVAO() as [ GL4, GL3, GLES3 ],
however ES 3.x still supports (deprecated):
  - client side vertex arrays
  - default vertex array object (VAO)

Setting a custom VAO leads to GL_INVALID_OPERATION for client side vertex arrays
used w/ glVertexPointer(..).

Hence removing GLES3 from hasNoDefaultVAO().

BuildComposablePipeline: Handle synthetic isGL* and getGL* more generic, allow FixedFunctionHook to properly determine it's identity

BuildComposablePipeline: Handle synthetic isGL* and getGL* more generic, allow using a prologue hook
as needed for FixedFunctionHook's 'isGL*core()', 'isGLES*Compatible()' and 'getGLProfile()' methods.

The latter FixedFunctionHook take the emulated GL profile GL2ES1 into account,
allowing JOGL code to assume only having GL2ES1 available.
Otherwise methods like Texture.enable(..) would skip the glEnable(TEXTURE_2D)
call and FixedFunctionHook could not enable it's usage.

GLProfile received a 'public static GLProfile createCustomGLProfile(final String profile, final GLProfile profileImpl)'
allowing utilities like FixedFunctionHook to create a generic profile.

BuildComposablePipeline sorts the methods before emitting for better readability.

Fix ShaderCode.es3_default_precision_fp: ES 3.x requires same precision for uniforms -> re-use es3_default_precision_vp; Fixes PointsDemoES2

FixedFuncHook: Use downstream gl.getGLProfile().getImpl() for custom GL2ES1 impl. profile, reflecting true implementing profile.