Backport fast alternate io.BytesIO implementation.
Merged r62778, r62779, r62802, r62806, r62807, r62808, r62809, r62844,
r62846, r62952, r62956.
diff --git a/PC/config.c b/PC/config.c
index f128382..a5e1530 100644
--- a/PC/config.c
+++ b/PC/config.c
@@ -53,6 +53,7 @@
extern void init_struct(void);
extern void initdatetime(void);
extern void init_fileio(void);
+extern void init_bytesio(void);
extern void init_functools(void);
extern void init_json(void);
extern void initzlib(void);
@@ -132,6 +133,7 @@
{"_struct", init_struct},
{"datetime", initdatetime},
{"_fileio", init_fileio},
+ {"_bytesio", init_bytesio},
{"_functools", init_functools},
{"_json", init_json},