The intended license for the CMake modules is BSD-2-Clause;
there's no desire to restrict what can be done with these,
and CMake modules are generally 2-clause licensed.
- Only copy over branding files if they are newer
Typically I have KDevelop open while working on Calamares; if I
am editing settings in `branding.desc` in the build directory,
then every time KDevelop runs CMake in the background, my
changes (for testing branding things!) would be overwritten.
Don't do that.
For normal builds with a clean build directory, this doesn't change
anything since the target is missing; changing a file in the
source directory **will** copy it over the build directory version.
- Copy the .qm files (compiled translations) into the build
dir as part of the build process. This is independent of
**installing** those same translations, but does allow
the translations to be used by Calamares when run from the
build dir for testing.
Since we install the CMake files now, also put license headers in them.
These files are intended to help plugin and branding component authors
write them in a simple Calamares-idiomatic way.
- Fix broken subdirectory call
- Automatically process lang/ if there isn't a CMakeLists.txt,
this was a bogus restriction
- Add support macros for installing branding and translations
