* build/ac-macros/swig.m4:   Allow swig 1.3.19, but not 1.3.18 since it is buggy.   If a suitable version of swig cannot be found, mention 1.3.19     instead of 1.3.16.
* build/ac-macros/swig.m4:
  Allow swig 1.3.19, but not 1.3.18 since it is buggy.
  If a suitable version of swig cannot be found, mention 1.3.19
    instead of 1.3.16.

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