upgpkg: lyx 2.1.0-1

update to 2.1.0; handle hicolor icon files; add bc as builddep

git-svn-id: file:///srv/repos/svn-packages/svn@211139 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to testing-i686, testing-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@211140 eb2447ed-0c53-47e4-bac8-5bc4a241df78