[PATCH 4/4] gdb/doc: document 'set debug py-unwind'

[Andrew Burgess <andrew.burgess@embecosm.com>]

When the 'set debug py-unwind' flag was added, it was never documented
in the manual.  This commit adds some text for this command to the
manual.

gdb/doc/ChangeLog:

	* python.texinfo (Python Commands): Document 'set debug
	py-unwind' and 'show debug py-unwind'.
---
 gdb/doc/ChangeLog   | 5 +++++
 gdb/doc/python.texi | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/gdb/doc/python.texi b/gdb/doc/python.texi
index 6d45e98a8af..6e380e3e694 100644
--- a/gdb/doc/python.texi
+++ b/gdb/doc/python.texi
@@ -162,6 +162,13 @@
 @itemx show debug py-breakpoint
 When @samp{on} @value{GDBN} prints debug messages related to the
 Python breakpoint API.  This is @samp{off} by default.
+
+@kindex set debug py-unwind
+@kindex show debug py-unwind
+@item set debug py-unwind on@r{|}off
+@itemx show debug py-unwind
+When @samp{on} @value{GDBN} prints debug messages related to the
+Python unwinder API.  This is @samp{off} by default.
 @end table
 
 @node Python API
-- 
2.25.4