Updating license on ac_doxygen.m4 to Apache 2.0, with the permission of Oren Ben-Kiki, the author
Updating license on ac_doxygen.m4 to Apache 2.0, with the permission of Oren Ben-Kiki, the author

git-svn-id: 9564524e887d65cbfe77c4fd75612775afad9401@500705 13f79535-47bb-0310-9956-ffa450edef68

apache/activemq-cpp,apache/activemq-cpp,apache/activemq-cpp,apache/activemq-cpp