smbsh and smbwrapper.so are not built by default under Solaris anymore and even when they are built by specifying --with-smbwrapper, they have to be manually installed because they do not get installed by running 'make install' I'm fairly sure that they were built under Solaris by default by versions 2.x of samba.
smbwrapper to be removed in 3.0.24.