glslang SPV tests: Add a set of SPV tests.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31212 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/spv.330.geom

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+#version 330 core
+#extension GL_ARB_separate_shader_objects : enable
+
+in gl_PerVertex
+{
+    float gl_ClipDistance[1];
+    vec4 gl_Position;
+} gl_in[];
+
+out gl_PerVertex
+{
+    vec4 gl_Position;
+    float gl_ClipDistance[1];
+};
+
+layout( triangles ) in;
+layout( triangle_strip, max_vertices = 3 ) out;
+
+void main()
+{
+    vec4 v;
+    gl_Position = gl_in[1].gl_Position;
+    gl_ClipDistance[0] = gl_in[1].gl_ClipDistance[0];
+    EmitVertex();
+    EndPrimitive();
+}