Streamline HPSF CustomProperties collection retrieval

Reduce the number of map lookups necessary to compute the return values for methods that return collections of property details. Since we maintain parity between the `props` and `dictionary` contents, when retrieving property details, we can reference the `props` directly and avoid the `dictionary` indirection.

git-svn-id: 13f79535-47bb-0310-9956-ffa450edef68
1 file changed