Replace laptop-mode-tools with acpi-support + pm-utils + hdparm

On Wheezy, replace laptop-mode-tools with acpi-support + pm-utils + hdparm (that ships /usr/lib/pm-utils/power.d/95hdparm-apm); does this combination take care of Wi-Fi power management?

Related issues

Blocked by #6015 (closed)

Original created by @tails on 6068 (Redmine)

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