local/bin/rmirror: Add -i option to ignore cvs files.

local/bin/btrfs-snap-all: Use it.

.local/bin/btrfs-snap-all

@@ -45,7 +45,7 @@ snap () { # $1=fs $2=subvol
 	local last=$(find "$fs/.snapshots/$subvol" -maxdepth 1 | tail -1)
 
 	$OPT_GIT_GC && git_gc "$fs/subvol"
-	$OPT_PREVIEW && rmirror "$fs/$subvol" "$last"
+	$OPT_PREVIEW && rmirror -i "$fs/$subvol" "$last"
 
 	echo -n "==> Snapshot '$fs/${subvol}'? (y/N) "
 	read -r choice

.local/bin/rmirror

@@ -12,6 +12,7 @@ A dry-run is made by default.
 
 Options:
 
+  -i: Ignore CVS fils (.git and .gitignore'd files).
   -p: Process.
   -s: Ignore dates when comparing files.
 
@@ -23,8 +24,11 @@ EOF
 ## replacing -a with -lr.
 flags="-a"
 opt_dry="-n"
-while getopts ":hps" opt; do
+opt_cvs_ignore=""
+while getopts ":ihps" opt; do
 	case $opt in
+	i)
+		opt_cvs_ignore="--cvs-exclude" ;;
 	h)
 		usage
 		exit ;;
@@ -45,4 +49,4 @@ shift $(($OPTIND - 1))
 [ "$1" = "-h" ] && usage && exit
 [ "$1" = "--" ] && shift
 
-rsync $opt_dry -iv $flags --size-only --delete --exclude="/lost+found" --exclude="/.Trash*" --progress -- "$1"/ "$2"
+rsync $opt_dry -iv $flags --size-only --delete --exclude="/lost+found" --exclude="/.Trash*" $opt_cvs_ignore --progress -- "$1"/ "$2"