Bug#169423: libc6.postinst should prompt for each service

[Adam Heath]

package: libc6
version: 2.3.1-3
severity: wishlist

libc6.postinst detects services that need to be restarted, and offers to
restart them.  It'd be nice if another option was given, that allowed for
individual services to be restarted, instead of all or nothing.