[aur-general] file exist in filesystem

[Jeremy Audet]

https://wiki.archlinux.org/index.php/Pkgbuild#license> mesa-git and other
-git packages built from same source
> *should* replace packages from [extra] as they provide *everything*
> packages from [extra] do (*exactly* the same files/directories/etc)

The licenses installed in `/usr/share/licenses/*` are never referenced by
applications. They are not application data, and an appication should never
reference those files. Those licenses are used only by the packaging
system. To state the same point a little differently, the files in
`/lib/mesa/*` belong to the mesa _application_, but the files in
/usr/share/licenses/mesa belong to the mesa _package_. (assuming
/lib/mesa/* exists -- I don't know about the app) As a result, a -git
package *should* differ from a non-git package regarding license files.

I'm not completely off my rocker here. See, for example, the clyde-git
package. [1] It is the second most popular package in the AUR, by votes,
and it installs license files in /usr/share/licenses/clyde-git. Also, the
arch wiki clearly repeats my point: "license file(s) should be included in:
/usr/share/licenses/pkgname/." [2]

[1] https://aur.archlinux.org/packages/cl/clyde-git/PKGBUILD
[2] https://wiki.archlinux.org/index.php/Pkgbuild#license