Patch from Scott McKellar:

Patch from Scott McKellar:

1. Move several internal details from the header to the implementation
file:

   The macros OSRF_HASH_LIST_SIZE and OSRF_HASH_NODE_FREE
   The declaration of the osrfHashNode struct
   The declarations of the osrfNewHashNode and osrfHashNodeFree
       functions (which are now static)

2. Remove a leading underscore from each of the struct tags
__osrfHashStruct and __osrfHashIteratorStruct;

3. Explicitly initialize all struct members.

git-svn-id: svn://svn.open-ils.org/OpenSRF/trunk@1204 9efc2488-bf62-4759-914b-345cdb29e865