Merge branch 'jk/rerere-xsnprintf'

Some calls to strcpy(3) triggers a false warning from static analysers that are less intelligent than humans, and reducing the number of these false hits helps us notice real issues. A few calls to strcpy(3) in "git rerere" that are already safe has been rewritten to avoid false wanings. * jk/rerere-xsnprintf: rerere: replace strcpy with xsnprintf