cmake LIZARDFS_HAVE_ examples

lizardfs/lizardfs cmake/CheckFunctions.cmake :3 

string(TOUPPER "LIZARDFS_HAVE_${FUNC}" VAR)

lizardfs/lizardfs cmake/CheckIncludes.cmake :17 

string(TOUPPER "LIZARDFS_HAVE_${INCLUDE_FILE_STR}" VAR)

lizardfs/lizardfs cmake/CheckMembers.cmake :4 

string(TOUPPER "LIZARDFS_HAVE_${STRUCT_STR}_${MEMBER}" VAR)