Add debug info when loading EGL entry points fails Mac11 bots are often failing with the: "Error loading EGL entry points" error for an unknown reason. This CL adds the library path to the error message to see if it's trying to open the correct file. Bug: chromium:1277690 Change-Id: Ieb73a3097702933a89794d92c19ee44a6301c169 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3330576 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Commit-Queue: Alexis Hétu <sugoi@chromium.org>