replaced an old variable name with the new version

cmake/make_debian_package.sh.in

@@ -39,7 +39,7 @@ cd debian_package
 CODENAME=`lsb_release -c | sed "{s/Codename:\s*//}"`
 
 # Obtain build version and the derived so-file and debian versions
-BUILD_NUMBER=`"@CMAKE_SOURCE_DIR@/cmake/getDebianBuildVersion" @PROJECT_NAME@ @PACKAGE_MAJORMINOR_VERSION@ ${CODENAME} @PACKAGE_DEPENDENCY_VERSIONS@` || exit 1
+BUILD_NUMBER=`"@CMAKE_SOURCE_DIR@/cmake/getDebianBuildVersion" @PROJECT_NAME@ @PACKAGE_MAJOR_VERSION@.@PACKAGE_MINOR_VERSION@ ${CODENAME} @PACKAGE_DEPENDENCY_VERSIONS@` || exit 1
 export PROJECT_BUILDVERSION="${CODENAME}${BUILD_NUMBER}"
 
 DEBVERSION="@PACKAGE_MAJOR_VERSION@-@PACKAGE_MINOR_VERSION@-${PROJECT_BUILDVERSION}"