[NEW_FEATURE] (Author: FLS) Enhance the performance of switching files if folding is applied.

git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository/trunk@1045 f5eea248-9336-0410-98b8-ebc06183d4e3
[BUG_FIXED] (Author: Jens Lorenz) Fix a detection error of UTF16 file from a binary file.

git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository/trunk@1046 f5eea248-9336-0410-98b8-ebc06183d4e3
[ENHANCEMENT] Add "End Reached" and "Top Reached" status in find/replace dialog StatusBar.
Make "Error", "End Reached" and "Top Reached" status visible (flash main window) if find/replace dialog is hidden.

git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository/trunk@1047 f5eea248-9336-0410-98b8-ebc06183d4e3