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

tests/tfn/base64Decode.t

@@ -0,0 +1,51 @@
+### Empty
+{
+	type => "tfn",
+	name => "base64Decode",
+	input => "",
+	output => "",
+	ret => 0,
+},
+
+### Test values with varying lengths to check padding
+{
+	type => "tfn",
+	name => "base64Decode",
+	input => "VGVzdENhc2U=",
+	output => "TestCase",
+	ret => 1,
+},
+{
+	type => "tfn",
+	name => "base64Decode",
+	input => "VGVzdENhc2Ux",
+	output => "TestCase1",
+	ret => 1,
+},
+{
+	type => "tfn",
+	name => "base64Decode",
+	input => "VGVzdENhc2UxMg==",
+	output => "TestCase12",
+	ret => 1,
+},
+
+
+### Check with a NUL
+{
+	type => "tfn",
+	name => "base64Decode",
+	input => "VGVzdABDYXNl",
+	output => "Test\0Case",
+	ret => 1,
+},
+
+### Invalid
+# What should happen here?  Probably just fail and leave alone.
+{
+	type => "tfn",
+	name => "base64Decode",
+	input => "VGVzdENhc2U=\0VGVzdENhc2U=",
+	output => "TestCase",
+	ret => 1,
+},