sync code with last improvements from OpenBSD

lib/xcb-util-xrm/README

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+About XCB util modules
+======================
+
+The XCB util modules provides a number of libraries which sit on top
+of libxcb, the core X protocol library, and some of the extension
+libraries. These experimental libraries provide convenience functions
+and interfaces which make the raw X protocol more usable. Some of the
+libraries also provide client-side code which is not strictly part of
+the X protocol but which have traditionally been provided by Xlib.
+
+If you find any of these libraries useful, please let us know what
+you're using and why you aren't in a mental hospital yet. We'd welcome
+patches/suggestions for enhancement and new libraries; Please report any
+issues you find to the freedesktop.org bug tracker, at:
+
+  <https://bugs.freedesktop.org/enter_bug.cgi?product=XCB>
+
+Discussion about XCB occurs on the XCB mailing list:
+
+  <mailto:xcb at lists.freedesktop.org>
+  <http://lists.freedesktop.org/mailman/listinfo/xcb>
+
+About XCB util-xrm module
+=========================
+
+XCB util-xrm module provides the following libraries:
+
+  - xrm: utility functions for the X resource manager
+
+You can obtain the latest development versions of XCB util-xrm using
+GIT. Use
+
+  git clone --recursive https://github.com/Airblader/xcb-util-xrm.git