Require Varnish 5.2, and set version string v2.2.

README.rst

@@ -245,9 +245,8 @@ Example
 REQUIREMENTS
 ============
 
-The VMOD requires the Varnish master branch since commit a339f63. See
-the project repository for versions that are compatible with other
-versions of Varnish.
+The VMOD requires Varnish version 5.2. See the project repository for
+versions that are compatible with other versions of Varnish.
 
 INSTALLATION
 ============

configure.ac

 AC_PREREQ(2.59)
 AC_COPYRIGHT([Copyright (c) 2013-2015 UPLEX Nils Goroll Systemoptimierung])
-AC_INIT([libvmod-re], [trunk])
+AC_INIT([libvmod-re], [v2.2])
 AC_CONFIG_MACRO_DIR([m4])
 m4_ifndef([VARNISH_VMOD_INCLUDES], AC_MSG_ERROR([Need varnish.m4 -- see README.rst]))
 AC_CONFIG_SRCDIR(src/vmod_re.vcc)
@@ -53,7 +53,7 @@ AS_VAR_IF([$1], [""], [$5], [$4])dnl
 ])# PKG_CHECK_VAR
 ])
 
-PKG_CHECK_MODULES([libvarnishapi], [varnishapi])
+PKG_CHECK_MODULES([libvarnishapi], [varnishapi >= 5.2.0])
 PKG_CHECK_VAR([LIBVARNISHAPI_DATAROOTDIR], [varnishapi], [datarootdir])
 PKG_CHECK_VAR([LIBVARNISHAPI_BINDIR], [varnishapi], [bindir])
 PKG_CHECK_VAR([LIBVARNISHAPI_SBINDIR], [varnishapi], [sbindir])

src/vmod_re.vcc

@@ -181,9 +181,8 @@ Example
 REQUIREMENTS
 ============
 
-The VMOD requires the Varnish master branch since commit a339f63. See
-the project repository for versions that are compatible with other
-versions of Varnish.
+The VMOD requires Varnish version 5.2. See the project repository for
+versions that are compatible with other versions of Varnish.
 
 INSTALLATION
 ============