saving uncommitted changes in /etc prior to emerge run

cpufreqd.conf

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+# this is a comment
+# see CPUFREQD.CONF(5) manpage for a complete reference
+
+[General]
+pidfile=/var/run/cpufreqd.pid
+poll_interval=2
+verbosity=4
+#enable_remote=1
+#remote_group=root
+[/General]
+
+#[acpi]
+#acpid_socket=/var/run/acpid.socket
+#[/acpi]
+
+#[nforce2_atxp1]
+#vcore_path=/some/path
+#vcore_default=1500
+#[/nforce2_atxp1]
+
+#[sensors_plugin]
+#sensors_conf=/some/file
+#[/sensors_plugin]
+
+[Profile]
+name=On Demand High
+minfreq=37%
+maxfreq=100%
+policy=ondemand
+[/Profile]
+
+[Profile]
+name=On Demand Low
+minfreq=20%
+maxfreq=80%
+policy=ondemand
+[/Profile]
+
+[Profile]
+name=Performance High
+minfreq=100%
+maxfreq=100%
+policy=performance
+#exec_post=echo 8 > /proc/acpi/sony/brightness
+[/Profile]
+
+[Profile]
+name=Performance Low
+minfreq=80%
+maxfreq=80%
+policy=performance
+[/Profile]
+
+[Profile]
+name=Powersave High
+minfreq=70%
+maxfreq=70%
+policy=powersave
+[/Profile]
+
+[Profile]
+name=Powersave Low
+minfreq=30%
+maxfreq=30%
+policy=powersave
+[/Profile]
+
+#[Profile]
+#name=Conservative High
+#minfreq=33%
+#maxfreq=100%
+#policy=conservative
+#[/Profile]
+#
+#[Profile]
+#name=Conservative Low
+#minfreq=0%
+#maxfreq=66%
+#policy=conservative
+#[/Profile]
+
+##
+# Basic states
+##
+# when AC use performance mode
+[Rule]
+name=AC Rule
+ac=on                    # (on/off)
+profile=On Demand High
+[/Rule]
+ 
+# conservative mode when not AC
+[Rule]
+name=AC Off - Low Battery
+ac=off                   # (on/off)
+battery_interval=0-30
+#exec_post=echo 5 > /proc/acpi/sony/brightness
+profile=Powersave Low
+[/Rule]
+
+# conservative mode when not AC
+[Rule]
+name=AC Off - Medium Battery
+ac=off                   # (on/off)
+battery_interval=30-70
+#exec_post=echo 5 > /proc/acpi/sony/brightness
+profile=On Demand Low
+[/Rule]
+
+# stay in performance mode for the first minutes
+[Rule]
+name=AC Off - High Power
+ac=off                   # (on/off)
+battery_interval=70-100
+#exec_post=echo 5 > /proc/acpi/sony/brightness
+profile=On Demand High
+[/Rule]
+
+##
+# Special Rules
+##
+# CPU Too hot!
+[Rule]
+name=CPU Too Hot
+acpi_temperature=55-100
+cpu_interval=50-100
+profile=Performance Low
+[/Rule]
+
+# use performance mode if I'm watching a movie
+# I don't care for batteries! 
+# But don't heat too much.
+[Rule]
+name=Movie Watcher
+programs=xine,mplayer,gmplayer
+battery_interval=0-100
+acpi_temperature=0-60
+profile=Performance High
+[/Rule]
+