[CMAKE] Declare that we want to use C11/C++11

That way, we won't use whatever standard is the default on whatever compiler we are using.
This should also prevent using more recent features without warning.

CMakeLists.txt

@@ -17,6 +17,8 @@ set(CMAKE_SKIP_PREPROCESSED_SOURCE_RULES TRUE)
 set(CMAKE_SKIP_ASSEMBLY_SOURCE_RULES TRUE)
 set(CMAKE_COLOR_MAKEFILE OFF)
 set(CMAKE_POSITION_INDEPENDENT_CODE OFF)
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 11)
 #set_property(GLOBAL PROPERTY RULE_MESSAGES OFF)
 
 if(NOT ARCH)