fix b2 project name

Author: jll63

build.jam

@@ -13,7 +13,7 @@ constant boost_dependencies
       /boost/preprocessor//boost_preprocessor
     ;
 
-project /boost/open_method ;
+project /boost/openmethod ;
 
 alias boost_open_method
     : usage-requirements
@@ -23,4 +23,4 @@ alias boost_open_method
 alias all : boost_open_method test ;
 explicit all ;
 
-call-if : boost-library open_method ;
+call-if : boost-library openmethod ;