Defines starting with `u' in src

• UNZ_BUFSIZE src/unzip.c:51
• UNZ_MAXFILENAMEINZIP src/unzip.c:55
• USE_CONSOLE_SLOT src/rtcnvram.c:712
• USE_PARITY_MEM src/rtcnvram.c:714
• USER_POLL src/kms.c:384