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

tests/tfn/sha1.t

@@ -0,0 +1,26 @@
+### Empty
+{
+	type => "tfn",
+	name => "sha1",
+	input => "",
+	output => "\xda\x39\xa3\xee\x5e\x6b\x4b\x0d\x32\x55\xbf\xef\x95\x60\x18\x90\xaf\xd8\x07\x09",
+	ret => 1,
+},
+
+### Basic
+{
+	type => "tfn",
+	name => "sha1",
+	input => "TestCase",
+	output => "\xa7\x0c\xe3\x83\x89\xe3\x18\xbd\x2b\xe1\x8a\x01\x11\xc6\xdc\x76\xbd\x2c\xd9\xed",
+	ret => 1,
+},
+
+### Binary w/NUL
+{
+	type => "tfn",
+	name => "sha1",
+	input => "\x00\x01\x02\x03\x04\x05\x06\x07\x08",
+	output => "\x63\xbf\x60\xc7\x10\x5a\x07\xa2\xb1\x25\xbb\xf8\x9e\x61\xab\xda\xbc\x69\x78\xc2",
+	ret => 1,
+},