- remove the old LGPL license headers from all files in Spack
- add SPDX headers to all files
- core and most packages are (Apache-2.0 OR MIT)
- a very small number of remaining packages are LGPL-2.1-only
* Fixes needed to build htop
* Build libncursesw.so, not libncurses.so
* Remove htop hack now that it is picking up newer ncurses
* Tell packages to link to new ncursesw libraries
Add package for htop, an interactive text-mode process viewer for
Unix systems. Think top, with pretty colors and dyanmic bar graphs.
More info [here](https://github.com/hishamhm/htop).