fixed previous folder of file selection dialog not remembered with GTK+ 2.24.23.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3437 ee746299-78ed-0310-b773-934348b2243d
made more dialogs size DPI-aware.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3438 ee746299-78ed-0310-b773-934348b2243d
src/foldersel.c: made more dialogs size DPI-aware.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3439 ee746299-78ed-0310-b773-934348b2243d
made query-search, filter dialog size DPI-aware.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3440 ee746299-78ed-0310-b773-934348b2243d
win32: added manifest to make sylpheed.exe dpi-aware.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3441 ee746299-78ed-0310-b773-934348b2243d
made more dialogs size DPI-aware.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3442 ee746299-78ed-0310-b773-934348b2243d
added command line option '--dpi dpinum'.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3443 ee746299-78ed-0310-b773-934348b2243d
made widget spacings of some dialogs dpi-aware.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3444 ee746299-78ed-0310-b773-934348b2243d
made widget sizes dpi-aware.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3445 ee746299-78ed-0310-b773-934348b2243d
updated NEWS.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3446 ee746299-78ed-0310-b773-934348b2243d