Initial import of libdpf.

Co-authored-by: Cursor <cursoragent@cursor.com>

thirdparty/hedley/test/flags.c

@@ -0,0 +1,13 @@
+#include "../hedley.h"
+
+enum Foo {
+  FOO_BAR = 1 << 0,
+  FOO_BAZ = 1 << 1,
+  FOO_QUX = 1 << 2
+} HEDLEY_FLAGS;
+
+int main(void) {
+  const enum Foo foo = HEDLEY_FLAGS_CAST(enum Foo, FOO_BAR | FOO_BAZ);
+
+  return HEDLEY_STATIC_CAST(int, foo);
+}