minor fixup: append to GCC.args.extra 


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5256 b64f7644-9d1e-0410-96f1-a4d463321fa5
cleanup build system settings for several modules


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5257 b64f7644-9d1e-0410-96f1-a4d463321fa5
MacGui: Live Preview extend the live preview maximum duration to 240 seconds ( 4 min.) from the previous 120 seconds ( 2 minutes).

- Uses 15 second incremements as previous.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5258 b64f7644-9d1e-0410-96f1-a4d463321fa5
MacGui: Raise the maximum allowable previews from 30 to 60 in 5 preview increments.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5259 b64f7644-9d1e-0410-96f1-a4d463321fa5
LinGui: increase max live preview duration to 240 seconds


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5260 b64f7644-9d1e-0410-96f1-a4d463321fa5
LinGui: increase max number of static previews to 60


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5261 b64f7644-9d1e-0410-96f1-a4d463321fa5