Changes in version 2.39:
Major Changes:
* Added !define /file and !searchparse (patch #2016254)
* Added service pack macros (AtLeastServicePack, IsServicePack, AtMostServicePack) for WinVer.nsh (patch #2036802)

Minor Changes:
* Added more nsDialogs list box handling macros (patch #2041919)
* Added Unicode version compatible System string type (patch #2025721, RFE #1961307)
* Fixed nsDialogs atom leak (bug #2053522)
* Minor documentation improvements
* Show hand cursor for nsDialogs links (patch #2004129)