Redo build system to properly use autotools and avoid compilation with apxs util.

tests/regression/config/00-load-modsec.t

@@ -0,0 +1,23 @@
+{
+	type => "config",
+	comment => "module loaded",
+	match_log => {
+		error => [ qr/ModSecurity for Apache.* configured\./, 10 ],
+	},
+},
+{
+	type => "config",
+	comment => "minimal config",
+	conf => sub {
+		# Open the minimal conf file, substituting the
+		# relative log paths with full paths.
+		open(C, "<$ENV{DIST_ROOT}/modsecurity.conf-minimal") or die "$!\n";
+		(my $conf = join('', <C>)) =~ s#Log logs/#Log $ENV{TEST_SERVER_ROOT}/logs/#g;
+		close C;
+
+		return $conf;
+	},
+	match_log => {
+		error => [ qr/ModSecurity for Apache.* configured\./, 10 ],
+	},
+},