HashInit and HashEmpty should exist

[Justin Schwartz]

LinkedLists have the functions LLInit, LLEmpty, LLAlloc, and LLFree. LLAlloc calls LLInit, and LLFree calls LLEmpty.

HashTables only have HashAlloc and HashFree, the initialization/cleanup takes place in those functions. The model should be changed to have those functions act like LLInit/LLFree, and call separate functions called HashInit and HashEmpty.

Ultimately this will eliminate the requirement that all HashTables must be dynamically allocated.

[Former user]

Removing version: 1.5.0 (automated comment)

[Justin Schwartz]

HashEmpty would be confusing, apparently, so the function should be called HashDeinit instead. Someone wanting to empty a HashTable then continue to use it would either call HashDeinit followed by another HashInit, or HashEnum passed hash_enum_afree, as before. HashDeinit frees all internal data and leaves the table unusable until initialized again.

[Justin Schwartz]

HashInit and HashDeinit implemented in commit 993: aaffd06cabbd