Cosmetics in CacheStoreDCaches, CacheStoreVCache and storeInit.

Cosmetics in CacheStoreDCaches, CacheStoreVCache and storeInit.

* StoreProc: renamed alen to size.
* StoreProc: Make connection before do {}
* rename fP to tfile.
* Declare nchunks later in StoreProc.
* Fixed order of storeInit parameters.
* storeInit: renamed tlen to length.

Reviewed-on: http://gerrit.openafs.org/133
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>