Refresh changelog and upload to stretch-security

debian/changelog

 mariadb-10.1 (10.1.37-0+deb9u1) stretch-security; urgency=medium
 
   * SECURITY UPDATE: New upstream release 10.1.37. Includes fixes for
-    the security vulnerabilities from previous releases as well.
+    the following security vulnerabilities (Closes: #912848);
     - CVE-2018-3282
     - CVE-2018-3251
     - CVE-2018-3174
     - CVE-2018-3156
     - CVE-2018-3143
     - CVE-2016-9843
+  * Add (and rename) new man pages
+  * Add Gitlab-CI definition file that can test each commit to this repository
+  * Fix d/control metadata to match status for Debian Stretch
+  * Physically remove patches no longer in series and not applied anyway
   * Previous upstream version 10.1.35 included fixes for the following
     security vulnerabilities:
     - CVE-2018-3066