FMSLogo Code

Change UIAUTOMATION.SENDBUTTONPUSHTOWINDOW to look for the button as a descendant, not a child.
The Windows 10 system MessageBox window has an extra level of windows that it didn't have on Windows XP and so the UI automation wasn't able to find the buttons. By looking for the button as a descendant, and not a strict child, this fixes the test automation on Windows 10, but shouldn't cause problems on Windows XP.

Reformat the README to reduce its size.
SourceForge can't show the README inline but doesn't explain why.
I had thought it was because they limit the file size of 8KiB but even after
doing this, it's not appearing. Even though it doesn't solve the problem, I
am keeping the changes (shorter is better).

Remove EDITFILE's assumption that :editfile.filetoedit doesn't change while the editor is open.
EDITNEWFILE can violate this assumption if it's run while an EDITFILE editor session is open.

Replace the DLLCALL to FindWindowW() with FMSLogo primitives.
This makes EDITFILE look cleaner and will make it portable to GNU/Linux, once WINDOWSET, GETFOCUS, and SETFOCUS are implemented there.

Tag the source code used to build FMSLogo 8.0.0.

Add the benchmarks for FMSLogo 8.0.0.

Fix a regression that prevented the screensaver from finding logolib in FMSlogo 8.0.0.
This was a bytes/characters bug that was introduced when porting FMSLogo to support Unicode.

Update the test log from the screensaver tests based on the 8.0.0 release test pass.

Update the test log based on the 8.0.0 realse test pass for Windows XP.
One new tracing message was added.

Increase the WAIT in TIMERTEST.YIELDFLAG.HELPER from WAIT 1 to WAIT 6.
WAIT 1 was enough for the timer event to be run on my Window XP machine but not on my Windows 10 machine.