Merge branch 'fc/parseopt-config'

* fc/parseopt-config: config: test for --replace-all with one argument and fix documentation. config: set help text for --bool-or-int git config: don't allow --get-color* and variable type git config: don't allow extra arguments for -e or -l. git config: don't allow multiple variable types git config: don't allow multiple config file locations git config: reorganize to use parseopt git config: reorganize get_color* git config: trivial rename in preparation for parseopt git_config(): not having a per-repo config file is not an error