www/websh: unbreak after the recent upgrade of tcl86

Despite being only a micro-version bump, the new TCL changes the
TCL_SHARED_LIB_SUFFIX from being set to "86" (the version of TCL)
to being derived from the extension's own version, which in our
case is 3.6.0b5).

While here, remove reference to the long-gone apache-2.2 and
a bogus deprecation.