lensfun: update to version 0.2.8
maintainers: add tv
sec: add version 2.7.5
Merge pull request #3252 from 4z3/sec

add SEC (Simple Event Correlator) 2.7.5
Merge pull request #3250 from hrdinka/update-lensfun

lensfun: update to version 0.2.8
httrack: upgrade 3.48.3 -> 3.48.17
texlive: update package paths, old versions no longer exist
gitolite: fix aborted build due to non-deterministic fetchgit
gtksourceview 3.12: hard code data dirs to nix store path
Merge remote-tracking branch 'upstream/master'