Version or release number for the shading language of the form

Property definitions

glesv2 :: glesv2 $ Sys :: gl_SHADING_LANGUAGE_VERSION
# Version or release number for the shading language of the form
fun gl_SHADING_LANGUAGE_VERSION: GLEnum `{ return GL_SHADING_LANGUAGE_VERSION; `}
lib/glesv2/glesv2.nit:1353,1--1354,81