UI: Fix build warnings when compiling in Windows
More Windows support
* Add wglSwapBuffers to vogl_is_swap_buffers_entrypoint
* Add wglMakeCurrent, wglMakeContextCurrentARB/EXT to
* vogl_is_make_current_entrypoint
Remove extra whitespace from end of file
UI: On Windows, GL entrypoints must be queried after the context is made
current.
* The editor only actually uses GL when replaying the trace file,
so this change moves the loading of GL to the tracereplayer instead of
being in the main vogleditor file.
* This change should work fine on Linux, although may be a less than ideal
* solution in that environment since the GL entrypoints are available
* immediately, even before a context is created and/or current.
vogl_has_active_context now supports wglGetCurrentContext
* This helps to enable framebuffer capturing on Windows
Support querying default framebuffer attributes using wgl