[tex-k] web2c build failure with slibtool

[Karl Berry]

    Using slibtool[1]

Aside: this claims to be a "drop-in replacement" for libtool, so it
seems to me it should handle this case. Or reduce/explain the claim.
The stated caveats don't seem to apply to this case. Anyway, whatever.

    web2c_LDADD = libweb2c.a

I guess I agree. Done in r61619. Thanks for the report. --karl