Added an Init() amd dealt with the PrettyName().

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3478 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/disk_device_manager/KPartitioningSystem.h

@@ -5,6 +5,8 @@
 
 #include "KDiskSystem.h"
 
+struct partition_module_info;
+
 namespace BPrivate {
 namespace DiskDevice {
 
@@ -13,6 +15,8 @@ public:
 	KPartitioningSystem(const char *name);
 	virtual ~KPartitioningSystem();
 
+	virtual status_t Init();
+
 	virtual bool IsFileSystem() const;
 
 	// Scanning