Fixing doxygen m4 for autoconf >= 2.59 per http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=368712
Fixing doxygen m4 for autoconf >= 2.59
per http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=368712



acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core