* Improve nginx setup to transfer auth information to the fcgiwrap
backend.
* Add instructions for creating client certs for testing.
* Add debug output to see if and which client cert has been used when
calling the csaf_provider.go .
* Add instructions for installing a TLS server certificate on nginx
* Fix link to nginx in README.md
* List all three ways to get a webserver TLS certificate. With some
hints on which to chose for which purpose.
* Do not add CSR instructions, because they can change over time and each CA may
have slightly different requirements.
* Add a hint about setting protocol selection.
* Fix typo in provider-setup.md
* Add technical hint about ERR_SSL_KEY_USAGE_INCOMPATIBLE.
* Improve format and spelling.
* Remove OSCP hint as this is related to client certificates.
* List all three ways to get a webserver TLS certificate. With some
hints on which to chose for which purpose.
* Refer to the official nginx documentation and remove some of the
instructions, because they can change over time and each CA may
have slightly different requirements.
* Add a hint about setting protocol selection.
* Change mechanics to use a variable to indicate if a tag build is
wanted. Add ability to specify tag explictely.
* Use variables to have only one build recipe.
* Place binaries in target specific bin- directories.
* Do not return to main branch as it may not be the original branch we
were on. Turn this into a warning.
* "build_linux": building for GNU/linux
* "build": Building for both linux and windows (cross build)
* Place the generate binaries under "binaries/" directory
* Improve echo messages
* Makefile with the following targets
** build for (linux system)
** build_win (windows system)
** build_tag (build from the last tag)
** clean for (removing the binaries)
* Adjust README file
