Fix #1: build/quietmake on MacOS

This change makes build/quietmake run correctly
on MacOS by shifting how stdout and stderr are
combined from make into awk.
Fix #2: ask make to report directories (for MacOS)

This commit adds the “-w” flag, by default, when running a quietbuild
so that make will indicate when it is changing directories.
Document additional tools

Had to install markdown and doxygen on my iMac.
Merge pull request #3 from Farsyte/ic-build-macos

Ic build macos