patch 8.2.0176: generating os headers does not work for Swedish

Problem:    Generating os headers does not work for Swedish.
Solution:   Set the locale to C. (Christian Brabandt, closes #5258)
diff --git a/src/osdef.sh b/src/osdef.sh
index 59ef55d..ead1aef 100755
--- a/src/osdef.sh
+++ b/src/osdef.sh
@@ -18,6 +18,11 @@
   srcdir=.
 fi
 
+# Make sure collation works as expected
+# swedish range [a-z] does not match 'w'
+export LC_COLLATE=C
+export LC_ALL=
+
 rm -f core* *.core
 
 cat << EOF > osdef0.c
diff --git a/src/version.c b/src/version.c
index 0306e47..fbb2ca5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    176,
+/**/
     175,
 /**/
     174,