Log Message:
Update pear-Date to 1.5.0a4.

1.5.0a1:

* Fixed bug #2378: getDate(DATE_FORMAT_UNIXTIME) doesn't convert to GMT
* Fixed bug #7439: US/Indiana Daylight Savings Change
* Implemented request #9700: Incorrect timestamps allowd
* Fixed bug #10349: Wrong offset in timezones
* Fixed bug #10591: inDaylightTime fails
* Implemented request #11090: microtime is not set by default constructor
* Fixed bug #11313: DST time change not handled correctly
* Fixed bug #11475: Date::copy don't copy milisecond part
* Fixed bug #11682: Australia/Perth has DST
* Fixed bug #11708: getWeekdayAbbrname returns wrong lenght if string is unicode
* Fixed bug #12019: Date->after(...) changes the date
* Fixed bug #12420: Date constructor handles iso 8601 timezone offests of zero
  incorrectly
* Fixed bug #12529: setTZ globally sets your TZ instead of only within date
  object
* Fixed bug #13376: setFromDateDiff change source dates

* Improved time-zone functionality so that it is entirely handled by the class
  and not reliant on native functions
* Added leap-second functionality
* Added functions 'Date::round()' and 'Date::trunc()'
* Added formatting function 'Date::format2()' that uses a 'YYYY-MM-DD'-style
  formatting code
* Added formatting function 'Date::format3()' to allow date-formatting using
  the formatting code of 'date()'

1.5.0a2:

QA release.
Users are strongly encouraged to adopt to inbuilt DateTime functionality.

Bug #17730 Patch: Avoid ereg, using preg_match
Doc Bug #15029 large Date_Span's cannot be created
Bug #14929 Timezone summertime
Bug #14856 America/Moncton longname and dstlongname missing
Bug #14084 TZ variable being set wrecks global config
Bug #13615 America/Toronto time-zone is missing longname and dstlongname
Bug #13545 Date_Span::set() doesn't work when passed an int and format
Req #13488 Please rename Methods format2 and format3

1.5.0a3:

QA release
Request #17626 Patch to add missing longname and dstlongname info
Bug #19184 use date_default_timezone_get() instead of ini_get(date.timezone)
Bug #19568 setDate() handles ISO week dates incorrectly

1.5.0a4:

Fix broken tgz package file