Fix gcc-10 version check

test/variant_in_place_index_construct_cx.cpp

@@ -105,7 +105,7 @@ int main()
         STATIC_ASSERT( v.index() == 4 );
     }
 
-#if BOOST_WORKAROUND(BOOST_GCC, == 100100)
+#if BOOST_WORKAROUND(BOOST_GCC, >= 100000 && BOOST_GCC < 100200)
 
     // no idea why this fails on g++ 10
 

test/variant_in_place_type_construct_cx.cpp

@@ -102,7 +102,7 @@ int main()
         STATIC_ASSERT( holds_alternative<X>(v) );
     }
 
-#if BOOST_WORKAROUND(BOOST_GCC, == 100100)
+#if BOOST_WORKAROUND(BOOST_GCC, >= 100000 && BOOST_GCC < 100200)
 
     // no idea why this fails on g++ 10