ushare require libdlna 0.4.0 at least
ushare files hierarchy changed

now the hierarchy is:
root
 |- music
 |   |- <items>
 |
 |- video
 |   |- <items>
 |
 |- image
 |   |- <items>
 |
 |- folders
 |   |- ContentDir 1
 |   |   |- <files>