- preparation for LyX 1.5.5
- backport the new PDF viewing method from trunk
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_5_X@24496 a592a061-630c-0410-9148-cb99ea01b6c8
- code cleanup to get rid of the two preferences files
- updates
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@18506 a592a061-630c-0410-9148-cb99ea01b6c8