#629 [Feature 2538] Exclude folders from search

[Sándor Bránya]

[Feature 2538] Exclude folders from search

Example usage:
- open Find in Files dialog (as usually)
- enter your search directories, separate each with semicolon
- enter directories to exclude with prefix "E " ("e" or "E" , and a space)
a simple example line: "D:\notepadpp;E D:\notepadpp\PowerEditor\"
an advanced one: "D:\notepadpp;F:\storage\etc..\bin; E F:\storage\cache;e D:\notepadpp\PowerEditor\"
- search or replace as usually.

Remarks:
- can use the search function exactly like before
- can enter multiple paths to search, and multiple paths to exclude
- can use "." and ".." in your paths
- only the first folder can be browsed by folderBrowser dialog.
- i'm considering to make a fine checkbox tree to replace folderBrowser dialog
with consistent look and on each Windows version