cmake HAVE__STRNICMP examples

Froser/gamemachine src/3rdparty/openal-soft-1.19.1/CMakeLists.txt :580 

CHECK_FUNCTION_EXISTS(_strnicmp HAVE__STRNICMP)

TheAssemblyArmada/Thyme deps/baseconfig/cmake/CheckFunctions.cmake :35 

check_symbol_exists(_strnicmp "string.h" HAVE__STRNICMP)