CLI: fix dimensions problem when both width and height are specified

The GUI will precompute both width and height and specify both on the
command line.  But then the CLI recomputes width based on height which
can result in the width being changed.

So, in non-anamorphic mode, disable keep_aspect so that width and heigh
are both kept.  And in other anamorphic modes, use custom ana when computing
dimensions so that both width and height are kept (i.e. recompute par).


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6369 b64f7644-9d1e-0410-96f1-a4d463321fa5
MacGui: removed the PresetIndexNum from the queue job dict.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6370 b64f7644-9d1e-0410-96f1-a4d463321fa5
MacGui: corrected the file header.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6371 b64f7644-9d1e-0410-96f1-a4d463321fa5
libhb: fix stop time of subtitles

scr_offset was not accounted for in stop time


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6372 b64f7644-9d1e-0410-96f1-a4d463321fa5