Follow-up to r38359: Add the '--enable-disallowing-of-undefined-references' configure option which is used to control enabling of using of -Wl,--no-undefined flag.
Follow-up to r38359:
Add the '--enable-disallowing-of-undefined-references' configure option which
is used to control enabling of using of -Wl,--no-undefined flag.

* configure.ac: Add the '--enable-disallowing-of-undefined-references' option.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion