MetaVNC 0.5.1 released

Java viewer:
- rewrite options menu
- add icons and a menu item for X desktop

LINUX SERVER (windowmonitor):
- icon: add default.kde and hicolor to icon search path
- launcher: search sub directories of the "applications" directory

LINUX VIEWER:
- add icons and a menu item for X desktop

WIN32 SERVER (Meta-Window-Manager):
- support WindowsXP style icons (id #1395075)

WIN32 VIEWER:
- bug fix of id #1395077 and #1399522 (by suppressing false mouse events)