Last version in the tree is 1.9.
Created attachment 77220 [details, diff] otcl-1.11-badfreefix.patch Ported 1.8 patch.
Created attachment 77221 [details, diff] otcl-1.11.ebuild.diff
Anyway, configure bombs out for me: configure: error: Installation of tcl seems incomplete or can't be found automatically. Please correct the problem by telling configure where tcl is using the argument --with-tcl=/path/to/package (perhaps after installing it), or the package is not required, disable it with --with-tcl=no.
In tree now, I had to do a large cleanup of the autoconf stuff, needs to be sent back upstream.