build-sys: Relocate lib/

test files in lib go to src/tests
include/ goes to local/
lib/*.c goes to local/

Signed-off-by: Craig Small <csmall@dropbear.xyz>

local/fileutils.h

@@ -0,0 +1,7 @@
+#ifndef PROCPS_NG_FILEUTILS
+#define PROCPS_NG_FILEUTILS
+
+int close_stream(FILE * stream);
+void close_stdout(void);
+
+#endif