Move from PCRE to PCRE2. PCRE is EOL and won't receive any security
updates anymore. Convert to PCRE2 by converting any function PCRE2 new
API.
Also update every entry in github workflows and README to point to the
new configure flag. (--with-pcre2)
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
* As there is now a builtin, lightweight libgcrypt
there is no need to disable tls-clho decryption.
* It is still possible to use a host libgcrypt
with `--with-local-libgcrypt'.
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
