Update config, multiprecision from master.

boost-commitbot · boost-commitbot · commit 4f2bdeb93a4b · 2016-09-20T12:15:11.000-04:00
diff --git a/libs/config b/libs/config
@@ -1 +1 @@
-Subproject commit 09beda8c1a53c55c8b1ec1a4fcd9dc7200693066
+Subproject commit 606cc77268d2356584ef5cf45d56f00c90197c78
diff --git a/libs/multiprecision b/libs/multiprecision
@@ -1 +1 @@
-Subproject commit e33ada0fdcd70aec5acb5c90844a6b285c734461
+Subproject commit 43560cca124aa0d4991c6e66d963c683e1453d5d
