initial commit - turn on LEDs

http://nis-embedded.blogspot.com/2012/01/i-stm32-discovery-part4-hello-work.html
loading in gdb works ok
added start memory initialization
interrupts and basic timer
I do not understand what does it do
finally: timer6 drives yellow LED, separtate to
timer3, that drives onboard leds (blue and green),
and button switches length of onboard leds light.
PWM ? Where?
servo partly works, seems it is not calibrated
servo drives by user button
cool pwm servo driver
xz
move code for stm32vl-discovery to discovery diretory
Merge remote-tracking branch 'origin/master'