Add STATIC_ASSERT() macros to verify that the compiler is configured correctly for the use of L'' and L"" strings. Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang.liu@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn> Reviewed-by: Bret Barkelew <bret.barkelew@microsoft.com>