Changes

build: Fix uptodate dependencies, skip building jar files if not outdated

Demos: Simplify GearsES2 + RedSquareES2

Demo LandscapeES2: Fix resolution @ reshape, use viewport dimension

Fix Demo texture01_xxx.fp: Use mgl_Texture0, mgl_ActiveTexture is undefined

Demos: Add various GearsFBO* demos, demonstrating FBO color-, depth- and stencil texture-buffer usage

- GearsFB00: Simple FBObject color-texture usage
- GearsFB01: FBO color- and depth-texture usage
- GearsFB02: FBO color-, depth- and stencil-texture usage

Bug 1444: Complete OpenGL 4.6 and ES 3.2 mapping incl Extensions

- Update KHR, GL, GLES2 and GLES3 Khronos header files
- Adjust set ordering of (new) extensions avoiding duplicates & matching GL profiles
  - Refined *ignore* (in make/config/jogl/) files
  - Adjusted GLSL extensions for GL3/GL4/ES3 (gpu_shader5 etc)
- Validate/iterate using `cmpOld2New` script, see scripts/update-cmpOld2New.sh
- Updated documentation: Desktop max GL-Profile 4.5 -> 4.6

UISceneDemo03: Disable GL_BLEND (matching UISceneDemo03b)

Bug 1524 - NEWT High-DPI Soft-PixelScale on Windows: Honor Windows OS Scale-Factor at Creation + Change

Bug 1524 - NEWT High-DPI Soft-PixelScale on X11: Honor OS Scale-Factor at Creation

Bug 1525 - SWT High-DPI X11/GTK: Wrong Scaling since SWT 4.36 (update)

After updating SWT to 4.36 (commit f71c29bace8ce579470b29e8e2aeca99e43f632a)
the dpi scaling on X11/GTK fails, e.g. via GDK_SCALE=2 environment variable.

The (new) GTK implementation sets `useCairoAutoScale` to true,
avoiding scaling the window-coordinates up.
Hence we have to duplicate the scaleUp/scaleDown using the device scale-factor.

SWTAccessor.getClientAreaInPixels() uses Scrollable.getClientAreaInPixels(),
however the current GTK implementation doesn't returned the scaled value.
Hence we have to autoScaleUp.

NewtCanvasSWT DPI Scale X11/Windows: We don't require pre-scaled size anymore

Since fixing Bug 1373 and Bug 1524, X11 and Windows NEWT windows are created (and changed)
with respect to the Soft-PixelScale factor.

Test: SWT High-DPI Soft-PixelScale on Windows

On Windows ans SWT >= 4.36, set system property `-Dswt.autoScale.updateOnRuntime=true`
to enable using the Windows scale factor.

Bug 1444: Add missing make/config/jogl/gl-gl4_es3-ignores.cfg

Commit 149216ae2a3034beb49390312651650aa5e2e79c
is incomplete, i.e. this configuaration was missing.