Create required dirs after dropping privileges, ensuring correct
ownership. Based on https://github.com/nzbgetcom/nzbget/pull/345.

Index: daemon/main/nzbget.cpp
--- daemon/main/nzbget.cpp.orig
+++ daemon/main/nzbget.cpp
@@ -333,6 +333,8 @@ void NZBGet::Init()
 		info("nzbget %s remote-mode", Util::VersionRevision());
 	}
 
+	m_options->CheckDirs();
+
 	info("using %s", m_options->GetConfigFilename());
 	info("nzbget runs on %s:%i", m_options->GetControlIp(), m_options->GetControlPort());
 
