I was using "GLSL Version #120". But now i am trying to do one tutorial and it is using "gl_ClipDistance" inside of vertex shader. And "GLSL Version #120" doesn't support "gl_ClipDistance". Now i need to change GLSL Version with over #120 for example #330 . I also have to change "gl_ModelViewProjectionMatrix" inside vertex shader. But my question is i need to change glTranslate,glRotate,glLoadIdentity etc ?
Yes, you can use them, but OpenGL will not automatically transfer the resulting matrix to your GLSL, and the older built-in uniform will not be available.
What this means is you'll need to use a glGet to retrieve the matrix to your program code, followed by a glUniform to send it to your shader.