NSIS 2.29

Major Changes
* Added nsDialogs - a replacement for InstallOptions

Minor Changes
* Disable Windows error messages for the entire installer and not just for
an incomplete list of fail-points (bug #1741061)
* Fixed incorrect large version handling of GetFileVersion (bug #1742255,
patch #1742562)
* Fixed the ReverseSection macro in Sections.nsh (bug #1742793)
* Minor documentation improvements
* Simplified REG_MULTI_SZ reader
* Use SHGetFolderPath where available to better support all users' folders

Utilities and Plug-ins
* Banner: Avoid possible hangs when called from page callbacks (bug
#1743801)
* NSISdl: added /TRANSLATE2 for more "translator-friendly" strings (patch
#1656076)
* NSISdl: support downloads over 2gb (patch #1723131)

Translations
* Added International Spanish

Build System
* Added support for HPUX (patch #1714416)