Set GDB version number to 9.1.

gdb/ChangeLog:

	* version.in: Set GDB version number to 9.1.
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9c46d46..f55f4a2 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2020-02-08  Joel Brobecker  <brobecker@adacore.com>
+
+	* version.in: Set GDB version number to 9.1.
+
 2020-02-05  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	PR gdb/25190:
diff --git a/gdb/version.in b/gdb/version.in
index bf80c72..28a2186 100644
--- a/gdb/version.in
+++ b/gdb/version.in
@@ -1 +1 @@
-9.0.90.DATE-git
+9.1