Fix hardcoded runtime destination in CMake install

Closes #1883.
Closes #1884.

(cherry picked from commit e3f916808ddc9b1064d7d585a2d5bbac9fa53038)

src/CMakeLists.txt

@@ -179,7 +179,7 @@ endif()
 if (GLFW_INSTALL)
     install(TARGETS glfw
             EXPORT glfwTargets
-            RUNTIME DESTINATION "bin"
+            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
             ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
             LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
 endif()