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

tests/csv_rx-pm.pl.in

@@ -0,0 +1,21 @@
+#!@PERL@
+#
+# Example to generate CSV performance data from test results taken from
+# test generated by gen_rx-pm.pl.
+#
+use strict;
+
+my %H = ();
+while (<>) {
+	chomp;
+	my ($op, $label, $n, $i, $value) = (m/\s*\d+\)\s+\S+\s+"([^"]*)"\s+(\S+)\s+(\d+) item\(s\): passed\s+\((\d+)\s+\@\s+([-\+\d\.E]+) msec\s.*/);
+
+	next unless defined($value);
+	$H{$n}{$label} = $value;
+
+}
+
+printf "%s, %s, %s, %s\n", qw(N rx1 rx2 pm1);
+for (sort {$a <=> $b} keys %H) {
+	printf "%s, %s, %s, %s\n", $_, $H{$_}{rx1}, $H{$_}{rx2}, $H{$_}{pm1}
+};