ncurses: prefix='' because it's needed by some /{,s}bin/ files.
zlib   : prefix='' and a little cleanup.
smartmontools-5.1-18: an update :-)
ncompress: rl.{org,net}/misc/ncompress-..  is not available. 
 donwload location changed another to one with the same checksum.


git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@1381 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc