fix typos in configure (I deliberately broke some shared libs, and forgot to restore)

configure

@@ -1491,7 +1491,7 @@ sub features
         have_libbfd => 
         {
             check=>(!$generic && !$static) &&
-                checklib('libbfdx') &&
+                checklib('libbfd') &&
                 test_for_header_file('bfd.h'),
 	    extralibs => '-lbfd',
         },
@@ -1499,7 +1499,7 @@ sub features
         have_libbsd => 
         {
             check=>(!$generic && !$static) &&
-                checklib('libbsdx') && 
+                checklib('libbsd') && 
                 test_for_header_file('bsd/string.h'),
             pkg_config=>'libbsd',
 	    backup_libs => '-lbsd',