Adding a record counter
Major changes!

Everything compiles and passes a basic sanity check, but there are some
bug fixes and we need to make sure that the output is still sensible.

>90% reduction in ram usage by making some of the bookkeeping structures
a lot more efficient.

maxPerson counter is now accurate when parsing population file.

Reusing many parsing variables rather than initializing them for every line.

Deleted abandoned code.

Mosquitoes were being allocated with new, but never deleted (memory leak).

Locations now keep track of how many infected mosquitoes they have.  This
allowed us to get rid of a huge data structure.

Added new Infection class to hold infection data for each person.

Added some more cerr output.
Removing commented code.
Merge branch 'master' of github.com:tjhladish/dengue

Conflicts:
	driver.cpp