Mantis#0001470, Mantis#0001464, DN_ACTIVATEAPP & EF_OPENMODE_*

git-svn-id: http://farmanager.googlecode.com/svn/trunk@11612 ea59307d-ff68-5b67-5a21-acd59c66a581
Plugin API for Far Manager 3.0 build 3854

git-svn-id: http://farmanager.googlecode.com/svn/trunk@11614 ea59307d-ff68-5b67-5a21-acd59c66a581