Configure: make 'enable-buildtest-c++' work (not be a regexp)

OpenSSL 1.1.1's Configure treats the strings in @disablables as regexps,
which means that the 'buildtest-c++' option needs a bit of escaping to
be interpreted as intended.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9016)

diff --git a/Configure b/Configure
index b220337964db0cf272d6bb1797dda333135eb37d..254b04c95d95d98dbbcff63592c14616442018c3 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -332,7 +332,7 @@ my @disablables = (
     "autoload-config",
     "bf",
     "blake2",
-    "buildtest-c++",
+    "buildtest-c\\+\\+",
     "camellia",
     "capieng",
     "cast",