Update to Bare Metal STM32F4 (ARM Cortex-M4) LCD Demo Proof of Concept

[Mike via Digitalmars-d-announce]

On Thursday, 20 July 2017 at 12:23:31 UTC, Mike wrote:

> * -O2 and -O3 give me a broken binary, but -O0, -O1, and -Os 
> work well.

Turned out to be a problem in my code, not with the compiler.  
All optimiziation options work well.

Mike