[PATCH weston] tests: Test whether a simple EGL main loop uses too many buffers

Hi, Here is a rebased version of the patch. The old one didn't apply cleanly anymore because of some changes in tests/Makefile.am I think there is some confusion about why it ends up using 3 buffers and I also keep getting in a muddle about it. I'll try to describe what I think is happening here.

[PATCH weston] tests: Test whether a simple EGL main loop uses too many buffers

Here is a test case which demonstrates the 3 buffers problem. It is fixed by the eglSwapInterval patch because that installs a sync event, but note the problem isn't really related to eglSwapInterval and is something we should probably fix anyway. Regards, - Neil --- >8 --- (use g