Issue with daylight savings time clock setting

[uyjulian]

It seems that the clock setting function on all calc-*.c files are bugged, as they set ref.tm_isdst = 1; even through it is not Daylight Savings Time. That means that the hour is set one hour behind.

[debrouxl]

I'll try replacing these cur.tm_isdst = 1; by cur.tm_isdst = ref.tm_isdst;.

EDIT: that's not enough.