Partial fix for inconsistencies re: #2578

gl_SecondaryPositionNV and gl_PositionPerViewNV are inconsistently
declared inside and outside of gl_PerVertex. This breaks interface block
matching. For now ignore these errors since it should be fixed with how
they are declared.

Test/link.vk.inconsistentGLPerVertex.0.vert

@@ -0,0 +1,20 @@
+#version 460 core
+
+// This test is to test isInconsistentGLPerVertexMember() workarounds.
+// Without that workaround this compile fails due to block declarations
+// in gl_PerVertex not being consistent for:
+// gl_SecondaryPositionNV
+// gl_PositionPerViewNV
+
+out vs_output 
+{ 
+	vec4 color;
+} vs_out; 
+
+in vec4 P;
+void main()
+{
+	vs_out.color = vec4(1.);
+	gl_PointSize = 1.0;
+	gl_Position = P;
+}