Revert last Ossama's patch. autoconf does not use extern "C", so we

shouldn't either, otherwise libtool might think we have dlopening while
libltdl might not be able to deliver it.

ChangeLog

@@ -1,7 +1,3 @@
-1999-04-29  Ossama Othman  <othman@cs.wustl.edu>
-
-	* ltconfig.in (dlopen): Declare it as extern "C" in C++.
-
 1999-04-29  Gary V. Vaughan  <gary@oranda.demon.co.uk>
 
 	* libtool.m4 (cygwin*|mingw*, DLLTOOL, OBJDUMP, AS): Only expand the

ltconfig.in

@@ -2079,9 +2079,6 @@ else
     which can conflict with char dlopen(); below.  */
 #include <assert.h>
 /* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
 /* We use char because int might match the return type of a gcc2
     builtin and then its argument prototype would still apply.  */
 char dlopen();