libXmu: update to 1.1.3.

This minor maintenance release includes some small bug fixes, build
configuration improvements and janitorial cleanups.

Alan Coopersmith (7):
      Remove SUNSHLIB support for SunOS 4.x shared libraries
      ShapeEllipseOrRoundedRectangle: Check height AND width, not width twice
      Convert tabs to spaces in StrToWidg.c
      Apply standard X.Org formatting & bracketing to StrToWidg.c
      Update README for gitlab migration
      Update configure.ac bug URL for gitlab migration
      libXmu 1.1.3

Emil Velikov (1):
      autogen.sh: use quoted string variables

Jon TURNEY (2):
      Remove pointless X_NOT_POSIX
      Include <direct.h> for _getdrives() on Win32

Mihail Konev (1):
      autogen: add default patch prefix

Peter Hutterer (1):
      autogen.sh: use exec instead of waiting for configure to finish

(wiz)