unittests: fix x86_gcc2 build issues

headers/cpp/libio.h

@@ -51,6 +51,7 @@
 #define _IOS_APPEND		8
 #define _IOS_BIN		128
 
+#define _IO_USER_BUF 1
 #define _IO_UNBUFFERED 2
 #define _IO_IN_BACKUP 0x100
 #define _IO_LINE_BUF 0x200

src/tests/kits/interface/OutlineListViewTest.cpp

@@ -18,9 +18,10 @@ BListItem* gExpected[16];
 int gIndex = 0;
 int gCount = 0;
 
+namespace CppUnit {
 
 template<>
-struct CppUnit::assertion_traits<BListItem*>
+struct assertion_traits<BListItem*>
 {
 	static bool equal(const BListItem* x, const BListItem* y) {
 		return x == y;
@@ -33,6 +34,8 @@ struct CppUnit::assertion_traits<BListItem*>
 	}
 };
 
+}
+
 
 BListItem*
 CheckExpected(BListItem* item, void* arg)