Force closed at settings application when delete Misc files

NullPointerException in MiscFilesHandler.java, missing check to
ensure that dir.list() does not return null.

Change-Id: I13aac19949826b385610fd1fee2befb411684023
Fix for battery temperature display

Centi temperature under zero degree is displayed with '-' sign.
Fix this using absolute value in centi degree display.

Change-Id: If4958d9c75c03d1f3ecfd14436fc80dc2fd57860
Fix for F/C in WifiConfigInfo

1. Turn off Wi-Fi
2. Open the dialer and input *#*#4636#*#*
3. Navigate to Wi-Fi information -> Wi-Fi config and observe "Unfortunately,
Settings has stopped" dialog.

Change-Id: I6ed59fc157e9bd8a46e00184b91a1a9f0412d198
Signed-off-by: Shuhrat Dehkanov <uzbmaster@gmail.com>
Fix of Settings application sort crash

The original implementation of compareTo function
will sometimes cause crash when the power usage list
above 32 items.

When comparing double values a proper comparison method
needs to be used. Using just subtraction does not take
into account NaN:S, infinities and +/-0 numbers. In certain
cirtumstances it seems that using subtraction causes
compareTo to return values that is not expected by the
sorting code and causes an illegal argument exception with
"Comparison method violates its general contract!".

This problem only happens if the sort code is called arrays
containing more than 32 (currently) due to how
ComparableTimSort works (call chain is Collections.sort ->
Arrays.sort(Object[]) -> ComparableTimSort.

Change-Id: If732f04797a3c8b2a43568c90bb73a1ec69a4c98
Merge "Force closed at settings application when delete Misc files"
Merge "Fix for F/C in WifiConfigInfo"
Merge "Fix for battery temperature display"
Option "None" replaced "Open" in Wi-Fi AP Settings of Wi-Fi Hotspot

First option in Wi-Fi AP settings of Wi-Fi Hotspot, "Open", is
changed to "None" since "Open" is not localized.
"None" (@string/wifi_security_none) already in use in other
Wi-Fi related screens and it is already localized in
the existing source code.

Change-Id: Ic79b20e3b0f094e064dd4758d8a03d67a208389a
Merge "Option "None" replaced "Open" in Wi-Fi AP Settings of Wi-Fi Hotspot"
Merge "Fix of Settings application sort crash"
Merge branch 'master' of https://android.googlesource.com/platform/packages/apps/Settings into jb-4.2