bash-completion: Add -S,-SP options arguments completion
bash-completion: Fix/improve generator names extraction
libarchive: Avoid struct init with variable everywhere

The SGI MIPSpro compiler also dislikes struct initializations with
variables.
Merge topic 'bash-completion-updates' into next

f85f6a5 bash-completion: Fix/improve generator names extraction
351fd63 bash-completion: Add -S,-SP options arguments completion
Merge topic 'update-libarchive' into next

7e352bc libarchive: Avoid struct init with variable everywhere