patch 8.1.1096: MS-Windows: cannot distinguish BS and CTRL-H

Problem:    MS-Windows: cannot distinguish BS and CTRL-H.
Solution:   Add code for VK_BACK. (Linwei, closes #1833)
diff --git a/src/os_win32.c b/src/os_win32.c
index c0d6ad7..e5e7500 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -882,6 +882,7 @@
     { VK_NEXT,	TRUE,	'Q',	'\322',	'v',	    '\323', }, // PgDn
     { VK_INSERT,TRUE,	'R',	'\324',	'\325',	    '\326', },
     { VK_DELETE,TRUE,	'S',	'\327',	'\330',	    '\331', },
+    { VK_BACK,	TRUE,	'x',	'y',	'z',	    '{', }, // Backspace
 
     { VK_SNAPSHOT,TRUE,	0,	0,	0,	    'r', }, // PrtScrn
 
@@ -911,8 +912,7 @@
     { VK_NUMPAD7,TRUE,  '\366',	'\367',	'\370',	    '\371', },
     { VK_NUMPAD8,TRUE,  '\372',	'\373',	'\374',	    '\375', },
     // Sorry, out of number space! <negri>
-    { VK_NUMPAD9,TRUE,  '\376',	'\377',	'\377',	    '\367', },
-
+    { VK_NUMPAD9,TRUE,  '\376',	'\377',	'|',	    '}', },
 };
 
 
diff --git a/src/term.c b/src/term.c
index c058171..ffc9884 100644
--- a/src/term.c
+++ b/src/term.c
@@ -663,6 +663,7 @@
     {K_K7,		"\316\366"},
     {K_K8,		"\316\372"},
     {K_K9,		"\316\376"},
+    {K_BS,		"\316x"},
 # endif
 
 # if defined(VMS) || defined(ALL_BUILTIN_TCAPS)
diff --git a/src/version.c b/src/version.c
index 3e675fc..792afea 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1096,
+/**/
     1095,
 /**/
     1094,