merge changes for 3.7.12-release

indra/cmake/Variables.cmake

indra/cmake/ViewerMiscLibs.cmake

indra/cmake/WebKitLibPlugin.cmake

indra/cmake/XmlRpcEpi.cmake

indra/cmake/ZLIB.cmake

indra/llcommon/llsdserialize.cpp

indra/llcommon/llsdserialize_xml.cpp

indra/llcommon/llsys.cpp

indra/llimage/llimagejpeg.h

indra/llmath/llmath.h

indra/llmath/llquaternion.cpp

indra/llmath/llquaternion.h

indra/llmath/v3dmath.h

indra/llmath/v3math.h

indra/llmessage/llares.h

indra/llmessage/llhttpassetstorage.cpp

indra/llprimitive/llmodel.cpp

indra/llui/llkeywords.cpp

indra/llui/llkeywords.h

indra/llui/llnotifications.cpp