Improve AC_INIT() arguments
The first two arguments of the Autoconf macro AC_INIT() are the package and its version. Change the package name to match what we use everywhere else:
openconnect → OpenConnect
Add the optional third argument bug-report.
The Autoconf 2.62 manual states bug-report should be an email:
The optional argument bug-report should be the email to which users should send bug reports.
The Autoconf 2.68 manual relaxes the requirement by adding:
AC_PACKAGE_BUGREPORT
,PACKAGE_BUGREPORT
Exactly bug-report, if one was provided. Typically an email address, or URL to a bug management web page.
The package tarname differs from the package name: the latter
designates the full package name, while the former is the
distribution tarball name. Its default value suits us: tarname
defaults to package with "GNU" stripped, lower-cased, and all
characters other than alphanumerics and underscores are changed
to "-".
OpenConnect → openconnect
The last argument url should be the home page for the package.