don't use wxFile::Eof() (for the reasons explained in the docs now :-) in wxTextFile - this allows it to be used with FIFOs

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7317 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/file.tex

@@ -160,7 +160,10 @@ in the file.
 
 Note also that this function doesn't work on unseekable file descriptors
 (examples include pipes, terminals and sockets under Unix) and an attempt to
-use it will result in an error message in such case.
+use it will result in an error message in such case. So, to read the entire
+file into memory, you should write a loop which uses 
+\helpref{Read}{wxfileread} repeatedly and tests its return condition instead
+of using Eof() as this will not work for special files under Unix.
 
 \membersection{wxFile::Exists}\label{wxfileexists}