Suppress msvc warning 4251 about templates as base classes not having a dll-interface.

Suppress msvc warning 4275 about base class std::logic_error not having a dll-interface.


[SVN r65318]

libs/program_options

@@ -1 +1 @@
-Subproject commit f0fdc822d4e38bd6107ce2e0bea19c73ed0eda0e
+Subproject commit 7d7dad09d3ccd40840142276b2a841dab38a1fa0