more uninitialized mutexes in rc.39

[Christoph Badura]

Hey Carter,

I just looked at rc.40 and I guess I didn't make myself clear. The reason
I proposed 

> int ArgusNewHashTable(struct ArgusHashTable *htable, int nelem. size_t elemsz)?

was so that we could use that to initialize the static ArgusHashTables
e.g. in clients/racount.c too:

struct ArgusHashTable ArgusSrcAddrTable, ArgusDstAddrTable;

I.e. the idea was to use ArgusNewHashTable() to do all the initialization
in every file that uses hash tables.

If that is agreeable to you I'll be glad tot change all the places and send
you the diffs.

--chris