del_angles: Modifies only the IFOs keeping one angle of a selected PGC.
Used with VobBlanker to strip all angles except one.

VobBlanker 2.1.1.0 updates VOBs (deleting all the unused angles) and
also updates VIDEO_TS. 

Copyright (C) 2006 by jsoto

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

====================================================================
=============Changelog==============================================
v1.1.0.2 (4-4-2006)
First public release.

