bpo-30605: Fix compiling binary regexs with BytesWarnings enabled. (#2016)

Running our unit tests with `-bb` enabled triggered this failure.
diff --git a/Misc/ACKS b/Misc/ACKS
index 135491d..74ac15b 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1685,6 +1685,7 @@
 Gerald S. Williams
 Jason Williams
 John Williams
+Roy Williams
 Sue Williams
 Carol Willing
 Steven Willis
diff --git a/Misc/NEWS b/Misc/NEWS
index 36ce9ce..6f56fe0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -350,6 +350,9 @@
 Library
 -------
 
+- bpo-30605: re.compile() no longer raises a BytesWarning when compiling a
+  bytes instance with misplaced inline modifier.  Patch by Roy Williams.
+
 - bpo-29870: Fix ssl sockets leaks when connection is aborted in asyncio/ssl 
   implementation. Patch by Michaël Sghaïer.