smake: build in stdenv

smake silently fails to build its binaries in superenv.
cdrtools: use smake instead of make

cdrtools won't build its binaries using plain make.
cdrtools: don't install smake files

cdrtools tries to install some generic smake includes, headers and
manpages, which conflict with the copies installed by smake itself.
cdrtools and dvdrtools conflict with each other

These two packages are incompatible forks of each other with the same
binary names.