a couple optimizations for dynamic HSE frequency - moved SetSysClock() to run after reset vector + bss init, and changed rcc which used hardcoded HSE_VALUE.
turn off leds/beeper before initializing pins to prevent flash at startup
uninitialized errorAngle fix in new PID


git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@362 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61