The old src url was updated by the host, making the required file inaccessible. The new url links directly to the required file. This direct link allows us to use fetchurl rather than requireFile.
genymotion: refactor src url
Fixed revisions:
1) Uses `pname`.
2) URL uses version variable in path. Data type for `url` was changed from path to string.
genymotion: refactor src url
Removed redundant `name` definition.
fixed typo in URL
changed requireFile to fetchurl
* Implement libGL as a symlink package which uses libraries from libglvnd and
headers from Mesa (since ones from libglvnd are outdated).
* Use libGL_driver.driverLink treewide; add FHS paths where possible.
