Support reading since_epoch and secondary brightness files

TWFunc::Fixup_Time_On_Boot: Will now try to read
/sys/class/rtc/rtc0/since_epoch to correct time, if that fails
it will try to use the ats files to correct time.

TWFunc::Set_Brightness: One single function to set brightness
from both the automated functions and the gui actions. It is
able to set a second brightness path if present, it will set
them both the same value. Many Sony devices have 2 brightness
files in the sysfs that must be set to properly set the
brightness.

Change-Id: I7ca582109085dfbcb46b8de73ad031e4b7903fca
diff --git a/gui/blanktimer.hpp b/gui/blanktimer.hpp
index 01c1dfb..c8159f6 100644
--- a/gui/blanktimer.hpp
+++ b/gui/blanktimer.hpp
@@ -41,7 +41,7 @@
 	void setConBlank(int blank);
 	void setTimer(void);
 	timespec getTimer(void);
-	int getBrightness(void);
+	string getBrightness(void);
 	int setBrightness(int brightness);
 	int setBlankTimer(void);
 	int setClockTimer(void);
@@ -51,7 +51,7 @@
 	int conblank;
 	timespec btimer;
 	unsigned long long sleepTimer;
-	int orig_brightness;
+	string orig_brightness;
 	bool screenoff;
 };