Fix warnings by shadowing variables in boost/logic/tribool.hpp

Change-Id: I7d85cdb5e32802ddfd83a350f3daa49348bc18a6
Reviewed-on: https://gerrit.libreoffice.org/3935Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

boost/UnpackedTarball_boost.mk

@@ -8,6 +8,8 @@
 #
 
 boost_patches :=
+#https://svn.boost.org/trac/boost/ticket/3093
+boost_patches += boost.3093.warnings.patch
 #https://svn.boost.org/trac/boost/ticket/3780
 boost_patches += boost.3780.aliasing.patch
 #https://svn.boost.org/trac/boost/ticket/4127

boost/boost.3093.warnings.patch

+--- misc/boost_1_44_0/boost/logic/tribool.hpp	Sun Nov 25 18:07:19 2007
++++ misc/build/boost_1_44_0/boost/logic/tribool.hpp	Fri May 17 12:03:35 2013
+@@ -93,7 +93,7 @@
+    *
+    * \throws nothrow
+    */
+-  tribool(bool value) : value(value? true_value : false_value) {}
++  tribool(bool initial_value) : value(initial_value? true_value : false_value) {}
+ 
+   /**
+    * Construct a new 3-state boolean value with an indeterminate value.