levels: MAP15 2013-08-16 update from Z0k
levels: MAP15 2013-08-16 update from Z0k

DW: http://www.doomworld.com/vb/post/1193758
Signed-off-by: RjY <83893d85028dba5ed7fb8142c08f77f1480bf584@users.sourceforge.net>

CWolfRU/freedoom,jmtd/freedoom,jmtd/freedoom,jmtd/freedoom,CWolfRU/freedoom