Add ScopeExit.

[SVN r50820]

doc/Jamfile.v2

@@ -30,6 +30,7 @@ boostbook doc
     <dependency>../libs/mpi/doc//mpi_autodoc.xml
     #<dependency>../libs/proto/doc//protodoc.xml 
     <dependency>../libs/proto/doc//proto
+    <dependency>../libs/scope_exit/doc//scope_exit
     <dependency>../libs/typeof/doc//typeof
     <dependency>../libs/xpressive/doc//autodoc.xml
     <dependency>../libs/xpressive/doc//xpressive
@@ -56,6 +57,7 @@ boostbook doc
     <implicit-dependency>../libs/tr1/doc//tr1
     <implicit-dependency>../libs/foreach/doc//foreach
     <implicit-dependency>../libs/proto/doc//proto
+    <implicit-dependency>../libs/scope_exit/doc//scope_exit
     <implicit-dependency>../libs/typeof/doc//typeof
     <implicit-dependency>../libs/xpressive/doc//xpressive
     <implicit-dependency>../tools/jam/doc//bjam