Merge pull request #74 in CASA/casa6 from CAS-12714 to master
* commit 'd43d12716b6c0a768859ccdaa53c28e5bedf52b1':
fix wrong string conversion of obs id, CAS-12714
ticket number, some typos, and mitigate indentation mess, CAS-12714
avoid stringstream and stream ops in frequent per-row code, make baseline only when needed, CAS-12714
don't build expensive debug msgs if not in debug level, CAS-12714
vector ctor init, use _p suffix in class vars, CAS-12714
unordered_map, more const and range-based loop, CAS-12714
use unordered_map for flag counters, CAS-12714
add postProcessBuffer() and move some flags counting there, CAS-12714
