#135 Add StgOpenStorageOnILockBytes function

[Nick Czeczulin]

Module already had StgCreateDocfileOnILockBytes. This patch adds StgOpenStorageOnILockBytes function as well for files already created and in memory.

[Nick Czeczulin]

Updated patch resolves a memory leak due to a missing Release()

[Mark Hammond]

I think both pStgPriority and plb must be released. Also, you should make sure the error path (when pStgPriority fails) should release plb.

[Nick Czeczulin]

Updated with missing Release() in error condition.

[Mark Hammond]

Thanks - checked in a slightly modified version (used 'k' for PyArg_ParseTuple flags as they are unsigned, and removed a little trailing whitespace) as changeset 4392:9559d74774bc

Thanks!