Add linear hash map bench

bench/Makefile

@@ -47,6 +47,7 @@ bench-mlib:
 	@./bench-mlib.exe 40
 	@./bench-mlib.exe 41
 	@./bench-mlib.exe 42
+	@./bench-mlib.exe 46
 	@./bench-mlib.exe 43
 	@./bench-mlib.exe 50
 	@./bench-mlib.exe 51
@@ -61,6 +62,7 @@ bench-mlib-mempool:
 	@./bench-mlib-mempool.exe 40
 	@./bench-mlib-mempool.exe 41
 	@./bench-mlib-mempool.exe 42
+	@./bench-mlib-mempool.exe 46
 	@./bench-mlib-mempool.exe 43
 	@./bench-mlib-mempool.exe 50
 	@./bench-mlib-mempool.exe 51
@@ -83,6 +85,7 @@ bench-stl:
 	@./bench-stl.exe 40
 	@./bench-stl.exe 41
 	@./bench-stl.exe 42
+	@./bench-stl.exe 46
 	@./bench-stl.exe 43
 	@./bench-stl.exe 50
 	@./bench-stl.exe 51