Update the LICENSE file
While updating the list of licenses in the NetRadiant PKGBUILD for Arch Linux (which now uses SPDX short identifiers, as recommended by Arch), I noticed that some licenses used in NetRadiant source code were not mentioned. I took a look at the different plugins/libraries, I hope I didn't forget any license.
Changes:
- Mention missing Apache, MIT and Zlib licenses
- Add the Apache license at the root of the tree
- Rename "Modified BSD License" as "3-Clause BSD License" (see https://opensource.org/license/bsd-3-clause)
- Fix some license mistakes in the plugins/libraries list (MD5 and PrtView) and list a few additional stuff
- GtkRadiant -> NetRadiant
Edited by Spike29