Standalone listen address fix. #1217
Introduced in 8201458332. Related to #1256.
8201458332
https://github.com/Neilpang/acme.sh/issues/1246
Add braces around ACCOUNT_URL when forming the protected parameters. Fixes #1243
merge v2
When _readlink is called the -f param must not be passed. _readlink (with leading underscore) is a wrapper around readlink (without leading underscore). _readlink already passes -f to readlink, that's why it must not be passed to _readlink.
fix https://github.com/Neilpang/acme.sh/issues/1188#issuecomment-357684744
https://github.com/Neilpang/acme.sh/issues/1130 https://github.com/Neilpang/acme.sh/issues/990
change back to use openssl for tls mode.
Get rid of a single stray erroneous single-quote that is breaking socat when using standalone mode.