Move include of <detail/workaround.hpp>

before the point where BOOST_WORKAROUND is used. Thanks to
Llew Sion Goodstadt.


[SVN r24936]

libs/program_options

@@ -1 +1 @@
-Subproject commit aed75819ef37a5b6d469187847458e3c9cd28e07
+Subproject commit 7fa6a814ab2f7c3c0210b58baed4f2a2bbfeee1e