Renamed libglfw3.pc to glfw3.pc.

CMakeLists.txt

@@ -262,10 +262,10 @@ install(FILES COPYING.txt readme.html
 # Create and install pkg-config file on supported platforms
 #--------------------------------------------------------------------
 if (_GLFW_X11_GLX OR _GLFW_COCOA_NSGL)
-    configure_file(${GLFW_SOURCE_DIR}/src/libglfw3.pc.in
-                   ${GLFW_BINARY_DIR}/src/libglfw3.pc @ONLY)
+    configure_file(${GLFW_SOURCE_DIR}/src/glfw3.pc.in
+                   ${GLFW_BINARY_DIR}/src/glfw3.pc @ONLY)
 
-    install(FILES ${GLFW_BINARY_DIR}/src/libglfw3.pc
+    install(FILES ${GLFW_BINARY_DIR}/src/glfw3.pc
             DESTINATION lib${LIB_SUFFIX}/pkgconfig)
 endif()