Redistributing mutability traits specializations to specific files in order

to avoid unnecessary includes.


[SVN r53136]

libs/graph

@@ -1 +1 @@
-Subproject commit 5080ba19dfa88a5205150d7aeb0499e32bc393d9
+Subproject commit 00211e91359126176b99040766645a20a4fd4c7b