wcecompat needs to be delivered as a DLL

stdio.h: remove fdopen and __iob_func
makefile: use only one def file
redir.cpp: remove much, things that make OpenSSL break
stdio_extras.cpp: remove __iob_func
wcecompat.def: remove references to obsolete functions
-wcecompatex.def

Change-Id: Iee5934634beb654a6e29f06dda6db12549a9acde