OpenGL incorrectly declared as a cast (instead of a literal)
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repository's issues are reserved for feature requests and bug reports.

* **I'm submitting a ...**
  - [x] bug report
  - [ ] feature request
  - [ ] support request => Please do not submit support request here, see note
  at the top of this template.


* **Do you want to request a *feature* or report a *bug*?**



* **What is the current behavior?**



* **If the current behavior is a bug, please provide the steps to reproduce and
if possible a minimal demo of the problem**



* **What is the expected behavior?**
GL_TIMEOUT_IGNORED
GK_TIMEOUT_IGNORED_APPLE

should have valid values.


* **What is the motivation / use case for changing the behavior?**

Nim 1.0 doesn't allow ```uint64(0xFFFFFFFFFFFFFFFF)```

Instead, used this:
  GL_TIMEOUT_IGNORED*: uint64 = 0xFFFFFFFFFFFFFFFF'u64
  GL_TIMEOUT_IGNORED_APPLE*: uint64 = 0xFFFFFFFFFFFFFFFF'u64


* **Please tell us about your environment:**
  
  - Version: [1.0.0 ]
  - OS: [ Windows]
  - Bindings: [ OpenGL]
  - Backend: [ C  and CPP ]

* **Other information** (e.g. detailed explanation, stacktraces, related issues,
suggestions how to fix, links for us to have context, eg. stackoverflow,
docs.gl, documentation etc)

This seems an issue with Nim 1.0, with prev version was working correctly.