made file dialog wrapper use native dialogs again,
fixed password dialog not remembering last key location/type,
disabled precompiled headers when buidling universal binaries,
updated changelog,
fixed size problems of some dialogs
git-svn-id: https://svn.code.sf.net/p/keepassx/code/trunk@179 b624d157-de02-0410-bad0-e51aec6abb33