Update CMakeList.txt for some build environments

[Роман Харин]

Hi,

Seems it's better to add some definitions to target_link_libraries() as follow

    ${GLFW_LIBRARIES}
+    ${X11_LIBRARIES}
+   Xinerama
    ${OPENGL_LIBRARY}

This allow avoid getting this errors:

• undefined reference to symbol 'XConvertSelection'
• undefined reference to `XineramaQueryExtension'
• undefined reference to `XineramaIsActive'
• undefined reference to `XineramaQueryScreens'

[Andrey Ugolnik]

I think that ${X11_LIBRARIES} should be enough. Please check development branch.