patch 8.0.0906: don't recognize Couchbase files

Problem:    Don't recognize Couchbase files.
Solution:   Add filetype detection. (Eugene Ciurana, closes #1951)
diff --git a/src/version.c b/src/version.c
index 8073068..a941d85 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    906,
+/**/
     905,
 /**/
     904,