Reapply fix for EXPORT_C problem in backend.dll, which got lost in the merge - bug 2971
# Microsoft Developer Studio Generated Dependency File, included by basicfunctest.mak
..\src\Basicfunctest.cpp : \
"$(EPOCROOT)epoc32\include\e32def.h"\
"$(EPOCROOT)epoc32\include\stdapis\zconf.h"\
"$(EPOCROOT)epoc32\include\zconf.h"\
"$(EPOCROOT)epoc32\include\zlib.h"\