ControlMath.C: cleanup order of symbols in math panel
iconpalette.C: 6 cols since many symbols come in pairs
Rrightarrow.xpm: was missing
searrow.xpm: was north east
swarrow.xpm: was north west
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@16316 a592a061-630c-0410-9148-cb99ea01b6c8