Add Boost.Log to the list of libraries that have to be built in rst files.

more/getting_started/detail/header-only.rst

@@ -25,6 +25,7 @@ The only Boost libraries that *must* be built separately are:
 * Boost.GraphParallel_
 * Boost.IOStreams_
 * Boost.Locale_
+* Boost.Log_ (see `build documentation`__)
 * Boost.MPI_
 * Boost.ProgramOptions_
 * Boost.Python_ (see the `Boost.Python build documentation`__
@@ -37,6 +38,7 @@ The only Boost libraries that *must* be built separately are:
 * Boost.Timer_
 * Boost.Wave_
 
+__ ../../libs/log/doc/html/log/installation/config.html
 __ ../../libs/python/doc/building.html
 
 A few libraries have optional separately-compiled binaries:

more/getting_started/detail/links.rst

@@ -11,6 +11,7 @@
 .. _Boost.GraphParallel: ../../libs/graph_parallel/index.html
 .. _Boost.IOStreams: ../../libs/iostreams/index.html
 .. _Boost.Locale: ../../libs/locale/index.html
+.. _Boost.Log: ../../libs/log/index.html
 .. _Boost.Math: ../../libs/math/index.html
 .. _Boost.MPI: ../../libs/mpi/index.html
 .. _Boost.ProgramOptions: ../../libs/program_options/index.html