bash: Import upstream patches

Source:
https://ftp.gnu.org/gnu/bash/bash-5.0-patches/
(bash50-003 to bash50-017)

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
(cherry picked from commit dc5f2df6a4)

utils/bash/patches/104-bash50-004.patch

@@ -0,0 +1,53 @@
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release:	5.0
+Patch-ID:	bash50-004
+
+Bug-Reported-by:	Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+Bug-Reference-ID:	<87lg0g8aiw.fsf@fifthhorseman.net>
+Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2019-04/msg00076.html
+
+Bug-Description:
+
+In bash-5.0, the `wait' builtin without arguments waits for all children of the
+shell. This includes children it `inherited' at shell invocation time. This
+patch modifies the behavior to not wait for these inherited children, some
+of which might be long-lived.
+
+Patch (apply with `patch -p0'):
+
+*** a/jobs.c	2018-12-06 11:44:34.000000000 -0500
+--- b/jobs.c	2019-04-12 15:15:10.000000000 -0400
+***************
+*** 2489,2496 ****
+    wait_procsubs ();
+    reap_procsubs ();
+! #if 1
+    /* We don't want to wait indefinitely if we have stopped children. */
+-   /* XXX - should add a loop that goes through the list of process
+-      substitutions and waits for each proc in turn before this code. */
+    if (any_stopped == 0)
+      {
+--- 2490,2495 ----
+    wait_procsubs ();
+    reap_procsubs ();
+! #if 0
+    /* We don't want to wait indefinitely if we have stopped children. */
+    if (any_stopped == 0)
+      {
+*** a/patchlevel.h	2016-06-22 14:51:03.000000000 -0400
+--- b/patchlevel.h	2016-10-01 11:01:28.000000000 -0400
+***************
+*** 26,30 ****
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 3
+  
+  #endif /* _PATCHLEVEL_H_ */
+--- 26,30 ----
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 4
+  
+  #endif /* _PATCHLEVEL_H_ */