system/rkhunter: Use built in TXZ layout

system/rkhunter/rkhunter.SlackBuild

@@ -8,7 +8,7 @@
 
 PRGNAM=rkhunter
 VERSION=${VERSION:-1.4.4}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
@@ -54,15 +54,11 @@ find -L . \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
 # Set the installer to build in our package directory
-TGZ_BUILD_ROOT=$PKG \
+TXZ_BUILD_ROOT=$PKG \
 ./installer.sh \
-  --layout TGZ \
+  --layout TXZ \
   --install
 
-# Put docs and manual pages in the correct place
-mv $PKG/usr/share/* $PKG/usr
-rmdir $PKG/usr/share
-
 # Don't clobber existing config file.
 mv $PKG/etc/rkhunter.conf $PKG/etc/rkhunter.conf.new