Add locking and traps for gtags_update.sh, and really do locking#361

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smemsh wants to merge 6 commits intoludovicchabant:masterfrom

smemsh:add-gtags-trap

Commits on Jun 6, 2024

Add locking to the gtags update script, like ctags has already
smemsh
committed

Commits on Jun 7, 2024

Add error trap for gtags that removes temporary files on early quit
smemsh
committed
Quote the arg given to shell command, in case it has spaces, etc
smemsh
committed
Set noclobber in update scripts, otherwise lock file is useless
smemsh
committed

Commits on Jun 9, 2024

Do lock before trap to avoid removing prior run cscope file
smemsh
committed

Commits on Sep 16, 2024

Remove even partial files as they can cause gtags segfault
smemsh
committed