6.5.0: AlarmClear fixes, thanks to @derbic7

Author: Naguissa

contributors.txt

@@ -10,4 +10,5 @@ meltingSnowdrift - https://github.com/meltingSnowdrift - Find unhandled centiry
 David Brown - https://github.com/davidhbrown - Fix century bit on year read.
 WoBo68 - https://github.com/WoBo68 - Power lost support for DS1307.
 mrfaptastic - https://github.com/mrfaptastic - enableBattery support (DS3231 and DS3232)
-Eleksir - https://github.com/eleksir - DS3231 and DS3232 aging factor register get/set
+Eleksir - https://github.com/eleksir - DS3231 and DS3232 aging factor register get/set
+derbic7 - https://github.com/derbic7 - alarmDisable fix for alarm2