fix RTC restart issue, but seems to have broken other stuff
Merge pull request #458 from ganehag/master

RFC-1123 formated date string
Merge branch 'master' into RTC_fix_broken

Conflicts:
	ChangeLog
more fiddling with RTC - seems reliable now
Merge branch 'master' of github.com:espruino/Espruino

Conflicts:
	ChangeLog
Finally fixed sporadic compilation problems with '-Os'
Initial implementation of hashlib (sha-224/256/384/512)
Added license from SHA2 library