Possible compatibility problems with earlier versions marked with '*'.
---- 1.9.1 2002/MM/DD
+--- 1.9.1 2002/10/05
Added man pages: yaz-client(1), yaz-ztest(8), yaz(7), zoomsh(1).
Added more Bib-1 diagnostics (approved extensions).
-Better check for iconv.
+GNU configure: better check for iconv.
More portable use of accept, getpeername. Check for socklen_t. Use
int/size_t if socklen_t is not defined.