Correct return type for read() and write().

git-svn-id: https://svn.microneil.com/svn/CodeDweller/branches/adeniz_1@48 d34b734f-a00e-4b39-a726-e4eeb87269ab

child.cpp

       return traits_type::eof();
     }
 #else
-    size_t nBytesRead;
+    ssize_t nBytesRead;
 
     nBytesRead = read(inputFileDescriptor,
 		      start,
 			       getErrorText());
     }
 #else
-    size_t nBytesWritten;
+    ssize_t nBytesWritten;
 
     nBytesWritten = write(outputFileDescriptor, pbase(), nBytes);