Merge Uwe's and Helge's code to set the language of the UI. Generate reLyX.bat so that the reLyX converter works. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_3_X@10067 a592a061-630c-0410-9148-cb99ea01b6c8