Add some variable declaration qualifier tests

tests/qualifier-01.glsl

@@ -0,0 +1,3 @@
+#version 130
+/* FAIL - inout only allowed in parameter list */
+inout vec4 foo;

tests/qualifier-02.glsl

@@ -0,0 +1,2 @@
+/* FAIL - in only allowed in parameter list in GLSL 1.10 */
+in foo;

tests/qualifier-03.glsl

@@ -0,0 +1,2 @@
+/* FAIL - out only allowed in parameter list in GLSL 1.10 */
+out vec4 foo;

tests/qualifier-04.glsl

@@ -0,0 +1,3 @@
+#version 130
+/* PASS */
+in vec4 foo;

tests/qualifier-05.glsl

@@ -0,0 +1,3 @@
+#version 130
+/* PASS */
+out vec4 foo;

tests/qualifier-06.glsl

@@ -0,0 +1,7 @@
+/* FAIL - in only allowed in parameter list in GLSL 1.10 */
+void main()
+{
+  in vec4 foo;
+
+  gl_Position = gl_Vertex;
+}

tests/qualifier-07.glsl

@@ -0,0 +1,7 @@
+/* FAIL - out only allowed in parameter list in GLSL 1.10 */
+void main()
+{
+  out vec4 foo;
+
+  gl_Position = gl_Vertex;
+}