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/procio.h

@@ -0,0 +1,6 @@
+#ifndef PROCPS_PROC_PROCIO_H
+#define PROCPS_PROC_PROCIO_H
+
+FILE *fprocopen(const char *path, const char *mode);
+
+#endif