upgpkg: which 2.20-7

- New upstream URL. Old one are dead.
- Bashify install file
- Syntax winter cleanup
- Change maintainership
- https://www.archlinux.org/todo/mtree-rebuilds/


git-svn-id: file:///srv/repos/svn-packages/svn@216175 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to testing-i686, testing-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@216176 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to testing-i686, testing-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@216177 eb2447ed-0c53-47e4-bac8-5bc4a241df78