Close handle to DMDirc.exe, don't remove entire directory unless it's empty.
Close handle to DMDirc.exe, don't remove entire directory unless it's empty.

Fixes CLIENT-207

Change-Id: Ica45e5c0b7ebf4ca2f714959fcbf55480bbc091c
Reviewed-on: http://gerrit.dmdirc.com/1842
Automatic-Compile: DMDirc Local Commits <fd7610eb81751244add0a62da2de7da51cfdce47@googlemail.com>
Reviewed-by: Chris Smith <711c73f64afdce07b7e38039a96d2224209e9a6c@dmdirc.com>

DMDirc/Installers,DMDirc/Installers,DMDirc/Installers,DMDirc/Installers