Split b2 dependencies into public and private.

Author: grafikrobot

build.jam

@@ -7,7 +7,6 @@ require-b2 5.2 ;
 
 constant boost_dependencies :
     /boost/any//boost_any
-    /boost/bind//boost_bind
     /boost/config//boost_config
     /boost/core//boost_core
     /boost/detail//boost_detail
@@ -17,7 +16,6 @@ constant boost_dependencies :
     /boost/smart_ptr//boost_smart_ptr
     /boost/static_assert//boost_static_assert
     /boost/throw_exception//boost_throw_exception
-    /boost/tokenizer//boost_tokenizer
     /boost/type_traits//boost_type_traits ;
 
 project /boost/program_options

build/Jamfile.v2

@@ -1,4 +1,9 @@
 
+constant boost_dependencies_private :
+    /boost/bind//boost_bind
+    /boost/tokenizer//boost_tokenizer
+    ;
+
 project
     : source-location ../src
     : common-requirements <library>$(boost_dependencies)