Refs #101060  Add a define for CCND_MAX_MATCH_PROBES, settable from outside.
Refs #101060  Add a define for CCND_MAX_MATCH_PROBES, settable from outside.

While here, make CCND_WTHZ and CCND_CACHE_MARGIN settable from outside as well, at compile time.
(CCND_WTHZ should probably remain compile time, but the others could be promoted to a runtime tunable.)

svartika/ccnx,svartika/ccnx,svartika/ccnx,svartika/ccnx,svartika/ccnx,svartika/ccnx,svartika/ccnx