[glslang][EXT] Support extension ARB_bindless_texture.

Add missing callgraph clean for bindless status flag.

Add test cases. Add support to check special extensions not be available for Vulkan when using GLSL.

Test/GL_ARB_bindless_texture.frag

@@ -0,0 +1,50 @@
+#version 460 compatibility
+
+#extension GL_ARB_bindless_texture: require
+
+#if !defined GL_ARB_bindless_texture
+#  error GL_ARB_bindless_texture is not defined
+#elif GL_ARB_bindless_texture != 1
+#  error GL_ARB_bindless_texture is not equal to 1
+#endif
+
+// Valid usage cases
+layout(bindless_sampler) uniform sampler2D s0;      //  case0:  bindless layout
+in sampler2D s1;                                    //  case1:  sampler as an input
+uniform uvec2 s2;                                   //  case2:  uvec2 as sampler constructor
+uniform ivec2 s3;                                   //  case3:  ivec2 as sampler constructor
+uniform int index;
+in sampler2D s4[2][3];                              //  case4:  sampler arrays of arrays
+uniform BB {sampler2D s5;} bbs5[2];                 //  case5:  uniform block member as a sampler
+in samplerBuffer s6;                                //  case6:  samplerBuffer input
+uniform UBO9 {samplerBuffer s7;};                   //  case7:  samplerBuffer as an uniform block member
+buffer SSBO10 {samplerBuffer s8;};                  //  case8:  samplerBuffer as an ssbo member
+layout(rgba8, bindless_image) in image2D i9;        //  case9:  bindless image as an input
+
+
+uniform vec2 coord;                                 //  bindless coord 2-D
+uniform int icoord;                                 //  bindless coord 1-D
+out vec4 color0;
+out vec4 color1;
+out vec4 color2;
+out vec4 color3;
+out vec4 color4;
+out vec4 color5;
+out vec4 color6;
+out vec4 color7;
+out vec4 color8;
+out vec4 color9;
+
+void main()
+{
+    color0 = texture(s0, coord);
+    color1 = texture(s1, coord);
+    color2 = texture(sampler2D(s2), coord);
+    color3 = texture(sampler2D(s3), coord);
+    color4 = texture(s4[index][index], coord);
+    color5 = texture(bbs5[index].s5, coord);
+    color6 = texelFetch(s6, icoord);
+    color7 = texelFetch(s7, icoord);
+    color8 = texelFetch(s8, icoord);
+    color9 = imageLoad(i9, ivec2(0,0));
+}