Log Message:
Update to 1.5.4:

1.5.4:
This minor release adds support for testing ShmGetImage requests, cleans
up various issues in the helper scripts, and improves the build configuration.

1.5.3:
This minor bug fix release of the standard X11 tool for measuring
how many X requests can be made per second fixes a couple of issues
with modern machines that can process X requests in a fraction of
the time the tool was originally designed to expect, as well as a
couple build configuration improvements.

1.5.2:
This minor maintenance release of the standard X11 tool for measuring
how many X requests can be made per second mostly includes build-time
improvements, along with one small feature addition, the
"-falseprecision" command line flag.