Fix DeviceLauncher to measure falling edge values properly and load
libEGL.so instead of using RTLD_NEXT in Boottime-EGL. Using RTLD_NEXT would cause the program to crash for reasons yet unknown. This fix replaces the usage of RTLD_NEXT by loading libEGL.so and executing the needed functions from there. This is "the correct" way to do hooking, but unfortunately now requires libEGL.so from /usr/lib instead of loading the next symbol dynamically. The other fix is to DeviceLauncher. Apparently, something has changed in the way the GPIO pin in the target device goes up/down which broke the way DeviceLauncher worked. This is now fixed, although the solution might need refining in the future.