CMakeLists.txt: Install FindOpenGLES2.cmake from right subdir.
CMakeLists.txt: Install FindOpenGLES2.cmake from right subdir.

KDE/gluon,pranavrc/example-gluon,KDE/gluon,KDE/gluon,KDE/gluon,pranavrc/example-gluon,pranavrc/example-gluon,pranavrc/example-gluon