Macros starting with `d' in src/slirp

• DEBUG_ARG src/slirp/slirpdebug.h:23
• DEBUG_ARGS src/slirp/slirpdebug.h:24
• DEBUG_CALL src/slirp/slirpdebug.h:22
• DEBUG_ERROR src/slirp/slirpdebug.h:26
• DEBUG_MISC src/slirp/slirpdebug.h:25