saving uncommitted changes in /etc prior to emerge run

UPower/UPower.conf

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+# Only the system vendor should modify this file, ordinary users
+# should not have to change anything.
+
+[UPower]
+
+# This is the smallest amount of time that UPower gives to session and system
+# processes after the suspend or hibernate request is given.
+# If the session power management component uses AboutToSuspend() then the
+# session process can only make this time larger than the value below, never
+# smaller.
+#
+# Reducing this time means the suspend happens quicker, but might also not give
+# some processes enough time to save state.
+#
+# default=1000
+SleepTimeout=1000
+
+# This controls whether hibernate is allowed when using encrypted swap.
+#
+# default=true
+AllowHibernateEncryptedSwap=true
+
+# This controls whether we want the powersave commands to be run when running
+# on battery or plugging AC.
+#
+# default=true
+RunPowersaveCommand=true
+
+# Enable the Watts Up Pro device.
+#
+# The Watts Up Pro contains a generic FTDI USB device without a specific
+# vendor and product ID. When we probe for WUP devices, we can cause
+# the user to get a perplexing "Device or resource busy" error when
+# attempting to use their non-WUP device.
+#
+# The generic FTDI device is known to also be used on:
+#
+# - Sparkfun FT232 breakout board
+# - Parallax Propeller
+#
+# default=false
+EnableWattsUpPro=false
+
+# Poll the kernel for dock state changes.
+#
+# Some drivers are still broken, and do not send out uvents when the
+# connected state changes.
+#
+# default=false
+PollDockDevices=false
+
+# Do we ignore the lid state
+#
+# Some laptops are broken. The lid state is either inverted, or stuck
+# on or off. We can't do much to fix these problems, but this is a way
+# for users to make the laptop panel vanish and for programs like
+# gnome-power-manager to not suspend on system startup.
+#
+# default=false
+IgnoreLid=false