Removed non-portable hacks and replaced them with more general
versions.

diff --git a/include/elfdll.h b/include/elfdll.h
index 134b111..0c389e3 100644
--- a/include/elfdll.h
+++ b/include/elfdll.h
@@ -4,5 +4,6 @@
 WINE_MODREF *ELFDLL_LoadLibraryExA(LPCSTR libname, DWORD flags, DWORD *err);
 HINSTANCE16 ELFDLL_LoadModule16(LPCSTR libname, BOOL implicit);
 void ELFDLL_UnloadLibrary(WINE_MODREF *wm);
+void *ELFDLL_dlopen(const char *libname, int flags);
 
 #endif