Moved Collection concept into Boost.ConceptCheck; moved other MultiArray concepts into boost::multi_array_concepts and documented them in reference.xml (do not know how to rebuild HTML from that); fixes #4032

[SVN r62611]

libs/concept_check

@@ -1 +1 @@
-Subproject commit 7e0926d77f93e36b13e902804e0b8bb5a0c26cb9
+Subproject commit d4658af6d79d8107da898cfe74553e81b4f44fd3

libs/multi_array

@@ -1 +1 @@
-Subproject commit 18d1dedd9003d155a22e23a462076ca39c38a43c
+Subproject commit f38af67708469f6d372278db614e97c115339742