[xpra-codecs-freeworld/f39] (7 commits) ...Add C++ compiler

Summary of changes: 981409b... Release 5.0 (*) 9abf165... Release 5.0| Add python3-cups BR (*) 8e2601d... Release 5.0.1 (*) 0bc9d56... Fix new installation directories (*) 2b03d41... Add openh264-devel BR (*) de49d30... Fix build options (*) b194807... Add C++ compiler (*) (*) This commit already existed in another branch; no separate mail sent