merge changes for 3.5.1-release

.hgignore

.hgtags

BuildParams

autobuild.xml

build.sh

doc/contributions.txt

indra/CMakeLists.txt

indra/cmake/00-Common.cmake

indra/cmake/APR.cmake

indra/cmake/CMakeLists.txt

indra/cmake/CSharpMacros.cmake

indra/cmake/ConfigurePkgConfig.cmake

indra/cmake/CopyBackToSource.cmake

indra/cmake/DragDrop.cmake

indra/cmake/Externals.cmake

indra/cmake/FindELFIO.cmake

indra/cmake/FindLLQtWebkit.cmake

indra/cmake/FindMT.cmake

indra/cmake/FindMono.cmake

indra/cmake/FindMySQL.cmake