added glad generator and a glad runtime

tools/glad-0.1.14a0/glad/lang/d/__init__.py

@@ -0,0 +1,25 @@
+from glad.lang.d.loader.egl import EGLDLoader
+from glad.lang.d.loader.gl import OpenGLDLoader
+from glad.lang.d.loader.glx import GLXDLoader
+from glad.lang.d.loader.wgl import WGLDLoader
+
+from glad.lang.d.generator import DGenerator
+
+
+_specs = {
+    'egl': EGLDLoader,
+    'gl': OpenGLDLoader,
+    'glx': GLXDLoader,
+    'wgl': WGLDLoader
+}
+
+_generators = {
+    'd': DGenerator,
+}
+
+
+def get_generator(name, spec):
+    gen = _generators.get(name)
+    loader = _specs.get(spec)
+
+    return gen, loader