* Foundation/src/LocalDateTime.cpp
- Fixed Sourceforge tracker 1800031.
The time zone differential was not being maintained in many places.
There are some minor functionality changes with this changeset however.
* Assignment methods which do not take the full time information or a
tzd as parameters will adjust the time stamp for DST according to
the time specified. The only methods that do not fall under this
constraint are:
- constructors or assigns which accept year, month, day, etc.
- constructors or assigns which accept a tzd
* operators += and -= correctly adjust for DST boundary crossings.
* operators + and - will return a LocalDateTime instance that has
been adjust for DST boundary crossings.
* Foundation/testsuite/src/LocalDateTimeTest.h
* Foundation/testsuite/src/LocalDateTimeTest.cpp
- Added testTimezone method.
- Removed an assertion in testGregorian1() that would fail when the
current DST offset differed from that of 1970-1-1.
