build iOS with 'make all'

This builds all skia tests by treating iOS tools
as executable applications. A few warnings were
fixed as well.

Removed old trace draw code and remnants.
Review URL: https://codereview.appspot.com/6597063

git-svn-id: http://skia.googlecode.com/svn/trunk@5776 2bbb7eff-a529-9590-31e7-b0007b416f81
17 files changed