This causes the following tests to pass:
glslparsertest/shaders/CorrectVersion.V110.frag
shaders/glsl-vs-sqrt-zero.frag
shaders/glsl-vs-sqrt-zero.vert
This causes the following tests to fail. These shaders were
previously failing to compile, but they were all failing for the wrong
reasons.
glslparsertest/shaders/attribute1.vert
glslparsertest/shaders/attribute2.vert
glslparsertest/shaders/main2.vert
All of the scalar, vector, and matrix constructors *except* "from
bool" constructors should be handled. Array and structure
constructors are also not yet handled.