Release notes, CMakeLists.txt updated for release 1.9

We have the below CMake code in CMakeLists.txt !

if(RELEASE_VERSION)
  set(EQ_DEFINITIONS -DEQ_RELEASE)
  set(VERSION_ABI ${RELEASE_VERSION})
else()
  set(VERSION_ABI ${VERSION_MAJOR}${VERSION_MINOR}${VERSION_PATCH})
endif()