status in cli now prints cpu MHz, 72 when running off crystal, 64 when running off intrc.
corrected WHO_AM_I check for mpu6050 when it's used on alternate address (AD0 high).
corrected PWM driver to consider CPU clock for timer prescalers - now things properly work below 72MHz
added a neat hack for pitch angle calculation so that it's not affected when roll reaches 90deg
added proper math for vector rotation instead of small-angle approximation
git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@225 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61
timecop@gmail.com
timecop