[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.

glslang/MachineIndependent/SymbolTable.h

@@ -319,6 +319,7 @@ public:
 
     virtual TParameter& operator[](int i) { assert(writable); return parameters[i]; }
     virtual const TParameter& operator[](int i) const { return parameters[i]; }
+    const TQualifier& getQualifier() const { return returnType.getQualifier(); }
 
 #ifndef GLSLANG_WEB
     virtual void setSpirvInstruction(const TSpirvInstruction& inst)