Add Dothem script

This keeps the checkout around and performs much better than Doit.

Dothem

@@ -0,0 +1,101 @@
+#!/bin/sh
+
+: ${J=-j2}
+: ${BUILDBASE=../buildfarm}
+: ${branches='next master maint pu jch'}
+
+force= with_dash= M= install=
+while	case "$1" in
+	-pedantic) M=$1 ;;
+	-force) force=$1 ;;
+	-dash) with_dash=y ;;
+	-noinstall) install=noinstall ;;
+	*) break ;;
+	esac
+do
+	shift
+done
+test -f /bin/dash || with_dash=
+
+for branch in $branches
+do
+	echo "** $branch **"
+	revision=$(git show-ref -s --verify "refs/heads/$branch") || {
+		echo "** No $branch"
+		continue
+	}
+	test -d "$BUILDBASE/$branch" || {
+		echo "** No $BUILDBASE/$branch"
+		continue
+	}
+
+	private=$(git rev-parse -q --verify private-$branch 2>/dev/null)
+	case $? in 0|1) ;; *) exit $? ;; esac
+
+	if	installed=$($HOME/git-$branch/bin/git version) &&
+		if version=$(expr "$installed" : '.*\.g\([0-9a-f]*\)$')
+		then
+			:
+		elif version=v$(expr "$installed" : \
+				'git version \(.*\)\.rc[0-9]*$')
+		then
+			version="$version"-$(expr "$installed" : \
+				'git version .*\.\(rc[0-9]*\)$')
+		else
+			version=v$(expr "$installed" : 'git version \(.*\)')
+		fi &&
+		version=$(git rev-parse --verify "$version^0" 2>/dev/null) &&
+		test "z$version" = "z$revision"
+	then
+		echo "* up-to-date version \"$installed\" is already installed from $branch"
+		test -n "$force" || continue
+	fi
+
+	echo "** $branch" &&
+
+	(
+		cd "$BUILDBASE/$branch"
+		git checkout "$branch" &&
+		git reset --hard  || exit
+		case "$private" in
+		'')
+			;;
+		?*)
+			git merge --squash --no-commit "$private" || {
+				echo >&2 "Cannot apply private edition changes"
+				git reset --hard
+			}
+			;;
+		esac &&
+
+		case "$with_dash" in
+		y)
+			case "$branch" in
+			master | maint | next | jch)
+				Meta/Make $M -- $J SHELL_PATH=/bin/dash test
+				;;
+			esac
+			;;
+		esac &&
+
+		Meta/Make $M -- $J all &&
+		Meta/Make $M -- $J test &&
+		case "$branch" in
+		master | maint | next )
+			Meta/Make $M -- doc
+			;;
+		jch )
+			Meta/Make $M -- doc install-doc
+			;;
+		*)
+			: ;;
+		esac &&
+		{
+			test z$install = znoinstall ||
+			Meta/Make $M -- install
+		} || exit $?
+
+		git reset --hard
+	) || break;
+
+done