MDL-32234 Library: usergetdate return different values when timezone is set
usergetdate should return consistent values for different timezone. There are
two return path
1. If timezone is servertime, it returns getdate
2. If timezone other then servertime, it use gmstrftime, which returns string and
values with leading zero.
In second case, leading zero's are removed and values are type casted. One major fix
is with yday, getdate returns 0 through 365, whereas %j returns 001 through 366. This
has been fixed as well.
