CHG: Extracted @piwi's bucketsort into separate files under /common

common/bucketsort.h

@@ -0,0 +1,26 @@
+#ifndef BUCKETSORT_H__
+#define BUCKETSORT_H__
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+typedef struct bucket {
+	uint32_t *head;
+	uint32_t *bp;
+} bucket_t;
+
+typedef bucket_t bucket_array_t[2][0x100];
+
+typedef struct bucket_info {
+	struct {
+		uint32_t *head, *tail;
+		} bucket_info[2][0x100];
+		uint32_t numbuckets;
+} bucket_info_t;
+
+
+bool bucket_malloc(bucket_array_t bucket);
+void bucket_free(bucket_array_t bucket);
+void bucket_sort_intersect(uint32_t* const estart, uint32_t* const estop,
+								  uint32_t* const ostart, uint32_t* const ostop,
+								  bucket_info_t *bucket_info, bucket_array_t bucket);
+#endif