smurf: Phase correction analysis and tuning corrections

- Set FTS_STAGE_CENTER back to 225.0 mm
- Added bounds checking on snprintf calls
- Used /* C style comments */ instead of // C++ style comments
- Revised astMalloc calls to make use of sizeof(*aVariable) instead of sizeof(<type>)
- Revised array indexing to use [] semantic instead of pointer addition offsets
smurf: Fixup pointer reassignment

- The previous commit to changes in phase correction code required a fix