Revert "Issue #155: do not allow memory based seeking when hitting too close to the end of the buffering region."
Revert "Issue #155: do not allow memory based seeking when hitting too close to the end of the buffering region."

This reverts commit 826d2bf614b8c9bdd25c0ad00b7749d5d55eb044.

nKey/FreeStreamer,ren6/FreeStreamer,alecgorge/FreeStreamer,zdw19840929/FreeStreamer,mjasa/FreeStreamer,christophercotton/FreeStreamer,mjasa/FreeStreamer,nKey/FreeStreamer,alecgorge/FreeStreamer,christophercotton/FreeStreamer,christophercotton/FreeStreamer,ren6/FreeStreamer,nKey/FreeStreamer,mjasa/FreeStreamer,zdw19840929/FreeStreamer,zdw19840929/FreeStreamer,alecgorge/FreeStreamer,ren6/FreeStreamer