use db4.8-util instead of db4.2-util

It can't find db4.2-util on squeeze packages.

see below
http://packages.debian.org/search?keywords=db4.2-util
http://packages.debian.org/search?keywords=db4.8-util
replace tab to space

unify coding style
extract loglevel
replace tab to space

unify coding style
add conditional branching

Standalone Server (upped with 'server' recipe) does not need sync process.
So, it doesn't need both syncprov and syncrepl.
Merge branch 'work_on_squeeze'
Merge branch 'selectable-loglevel'
Merge branch 'suppress-unuse-config'