Fix the broken factory coverage system again.  Two, count them, two more procedure rewrites.
Merge branch 'ncn-devel' into merge-from-standard
Fix silly compilation error in last fix.
Merge branch 'ncn-devel' into merge-from-standard
Fix another disappearing-goods bug with factory coverage.
Merge branch 'ncn-devel' into merge-from-standard
Fix various potential overflow errors in simcity.cc and simhalt.cc related to journey times.
Merge branch 'ncn-devel' into merge-from-standard
Merge branch 'jp-devel' into merge-from-standard
Fix likely double-delete errors triggered by James' patch commit 77fc2bdf back in April.
Merge branch 'merge-from-standard' into ncn-devel
Revise transfer time /transshipment time calculations to provide much greater granularity.
Fix transfer times on reload.
FIX: Compile errors in Windows