From: Matt Jolly <kangie@gentoo.org>

Thanks to dev-libs/openssl exposing a QUIC API from
3.2, cURL is able to use OpenSSL as a QUIC backend.

This commit enables users to select between the
`curl_quic_ngtcp2` and `curl_quic_openssl` backends
via their associated USE_EXPAND and provides a mechanism
to easily add more backends as they are implemented.

It also renames the live ebuild's `nghttp3` USE to
`http3` to support its use as a generic feature
flag, and to align with net-analyzer/wireshark
and www-serners/nginx.

Finally, we get to drop a disgusting pkg-config
workaround thanks to some upstream efforts
that render it irrelevant (and detrimental
to a successful build).

Signed-off-by: Matt Jolly <kangie@gentoo.org>
---
net-misc/curl/curl-9999.ebuild | 70 +++++++++++++---------------------
net-misc/curl/metadata.xml | 4 +-
2 files changed, 30 insertions(+), 44 deletions(-)

diff --git a/net-misc/curl/curl-9999.ebuild b/net-misc/curl/curl-9999.ebuild index 7f560fb74a9b..b42cca9c5152 100644
--- a/net-misc/curl/curl-9999.ebuild
+++ b/net-misc/curl/curl-9999.ebuild
@@ -26,16 +26,22 @@ fi

LICENSE="BSD curl ISC test? ( BSD-4 )"
SLOT="0"
-IUSE="+adns +alt-svc brotli debug +ftp gnutls gopher +hsts +http2 idn +imap kerberos ldap mbedtls nghttp3 +openssl +pop3"
-IUSE+=" +psl +progress-meter rtmp rustls samba +smtp ssh ssl sslv3 static-libs test telnet +tftp websockets zstd"
-# These select the default SSL implementation
-IUSE+=" curl_ssl_gnutls curl_ssl_mbedtls +curl_ssl_openssl curl_ssl_rustls" +IUSE="+adns +alt-svc brotli debug +ftp gnutls gopher +hsts +http2 http3 idn +imap kerberos ldap mbedtls +openssl +pop3"
+IUSE+=" +psl +progress-meter quic rtmp rustls samba +smtp ssh ssl sslv3 static-libs test