Assertions need to be replaced with real error messages for release mode compiles.

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Make an app that will produce an assert.
2. Run the malformed app in release mode.

What is the expected output? What do you see instead?
Expected output:  an assertion triggered an event.

What version of the product are you using? On what operating system?
ToT on MacOSX 10.6.7.

Please provide any additional information below.
Assertions only work in Debug mode by their nature.  Real error messages to 
stderr would be preferred and exiting the program would help also.

Original issue reported on code.google.com by samueldc...@gmail.com on 31 Mar 2011 at 8:02