patch from andreasf which fixes build for gcc4 (part of bug #2637

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27061 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/system/kernel/cow_bug113_test.cpp

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h>
 #include <sys/stat.h>
 #include <unistd.h>
 

src/tests/system/kernel/page_fault_cache_merge_test.cpp

@@ -1,6 +1,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 #include <sys/wait.h>
 #include <unistd.h>
 

src/tests/system/kernel/syscall_restart_test.cpp

@@ -235,7 +235,8 @@ public:
 	virtual status_t Prepare()
 	{
 		fBytesRead = -1;
-		fFDs = (int[2]){-1, -1};
+		fFDs[0] = -1;
+		fFDs[1] = -1;
 
 		if (pipe(fFDs) != 0)
 			return errno;
@@ -288,7 +289,8 @@ public:
 	virtual status_t Prepare()
 	{
 		fBytesWritten = -1;
-		fFDs = (int[2]){-1, -1};
+		fFDs[0] = -1;
+		fFDs[1] = -1;
 
 		if (pipe(fFDs) != 0)
 			return errno;