git-quiltimport /bin/sh-ism fix
Bryan Wu reported /usr/local/bin/git-quiltimport: 114: Syntax error: Missing '))' Most bourne-ish shells I have here accept x=$((echo x)|cat) but all bourne-ish shells I have here accept x=$( (echo x)|cat) because $(( might mean arithmetic expansion. Signed-off-by: NFrancis Daly <francis@daoine.org> Signed-off-by: NJunio C Hamano <junkio@cox.net>
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