My earlier attempt with commit 851e449 to eliminate all the compiler
warnings about mixing signed and unsigned ints in an expression
introduced a subtle bug. This fixes that mistake.
Fixes#3488
Remove the "make iwyu" build target. Move the functionality into the
recently introduced lint.fish script. Fix a lot, but not all, of the
include-what-you-use errors. Specifically, it fixes all of the IWYU errors
on my OS X server but only removes some of them on my Ubuntu 14.04 server.
Fixes#2957
This change moves source files into a src/ directory,
and puts object files into an obj/ directory. The Makefile
and xcode project are updated accordingly.
Fixes#1866
