Update extensions with upstream

The merge with upstream had conflicts in extensions/shape.lisp and
extensions/xrender.lisp and the new files were added as shape.lisp~
upstream-clx and xrender.lisp~upstream-clx.

Just copy these files over the existing ones.
2 jobs from rtoy-update-clx-with-cmucl-fixes in 27 minutes and 24 seconds (queued for 8 minutes and 29 seconds)
Status Job ID Name Coverage
  Test
failed #1221
linux
linux-runner

00:18:29

passed #1222
osx
osx-runner

00:08:54

 
Name Stage Failure
failed
linux-runner Test There is an unknown failure, please try again
99.999% of the tests passed

Failed tests: (ISSUES-TESTS::ISSUE.41.1)
| Failed Form: (PROCESS-STATUS ISSUES-TESTS::P)
| Expected :CONTINUED but saw :EXITED
|
ISSUE.41.1: 5 assertions passed, 1 failed.

ERROR: Job failed: exit code 1