add back krb5_version and krb5_long_version to libkrb5, hide them in libvers

prompted by bug reported by Markus Moeller

configure.ac

@@ -628,8 +628,11 @@ dnl This is the release version name-number[beta]
 dnl
 
 cat > include/newversion.h.in <<EOF
-const char *heimdal_long_version = "@([#])\$Version: $PACKAGE_STRING by @USER@ on @HOST@ ($host) @DATE@ \$";
-const char *heimdal_version = "AC_PACKAGE_STRING";
+#ifndef VERSION_HIDDEN
+#define VERSION_HIDDEN
+#endif
+VERSION_HIDDEN const char *heimdal_long_version = "@([#])\$Version: $PACKAGE_STRING by @USER@ on @HOST@ ($host) @DATE@ \$";
+VERSION_HIDDEN const char *heimdal_version = "AC_PACKAGE_STRING";
 EOF
 
 if test -f include/version.h && cmp -s include/newversion.h.in include/version.h.in; then

lib/krb5/version.c

@@ -35,7 +35,5 @@
 
 /* this is just to get a version stamp in the library file */
 
-#define heimdal_version __heimdal_version
-#define heimdal_long_version __heimdal_long_version
 #include "version.h"
 

lib/vers/print_version.c

@@ -34,6 +34,8 @@
 
 #include <config.h>
 
+#define VERSION_HIDDEN static
+
 #include "roken.h"
 
 #include "version.h"