curl: Use ca-bundle for all TLS libraries.

It simplifies the Makefile a bit. In addition, using ca-bundle
saves some space as well.

It also fixes an issue with at least transmission, which has a dependency
on ca-bundle, but currently libcurl with OpenSSL or GnuTLS cause it not
to work.

This has been tested on mt7621 with OpenSSL and GnuTLS just by running
'curl https://www.google.com' and seeing if there's a verify error.
The rest are already using ca-bundle and therefore work fine.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Tested-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

package/network/utils/curl/Makefile

@@ -112,13 +112,15 @@ CONFIGURE_ARGS += \
 	--without-libmetalink \
 	--without-librtmp \
 	--without-libidn \
+	--without-ca-path \
+	--with-ca-bundle=/etc/ssl/certs/ca-certificates.crt \
 	\
 	$(call autoconf_bool,CONFIG_IPV6,ipv6) \
 	\
-	$(if $(CONFIG_LIBCURL_WOLFSSL),--with-cyassl="$(STAGING_DIR)/usr" --without-ca-path --with-ca-bundle=/etc/ssl/certs/ca-certificates.crt,--without-cyassl) \
-	$(if $(CONFIG_LIBCURL_GNUTLS),--with-gnutls="$(STAGING_DIR)/usr" --without-ca-bundle --with-ca-path=/etc/ssl/certs,--without-gnutls) \
-	$(if $(CONFIG_LIBCURL_OPENSSL),--with-ssl="$(STAGING_DIR)/usr" --without-ca-bundle --with-ca-path=/etc/ssl/certs,--without-ssl) \
-	$(if $(CONFIG_LIBCURL_MBEDTLS),--with-mbedtls="$(STAGING_DIR)/usr" --without-ca-path --with-ca-bundle=/etc/ssl/certs/ca-certificates.crt,--without-mbedtls) \
+	$(if $(CONFIG_LIBCURL_WOLFSSL),--with-cyassl="$(STAGING_DIR)/usr",--without-cyassl) \
+	$(if $(CONFIG_LIBCURL_GNUTLS),--with-gnutls="$(STAGING_DIR)/usr",--without-gnutls) \
+	$(if $(CONFIG_LIBCURL_OPENSSL),--with-ssl="$(STAGING_DIR)/usr",--without-ssl) \
+	$(if $(CONFIG_LIBCURL_MBEDTLS),--with-mbedtls="$(STAGING_DIR)/usr",--without-mbedtls) \
 	\
 	$(if $(CONFIG_LIBCURL_LIBIDN2),--with-libidn2="$(STAGING_DIR)/usr",--without-libidn2) \
 	$(if $(CONFIG_LIBCURL_SSH2),--with-libssh2="$(STAGING_DIR)/usr",--without-libssh2) \