scons: Make debug build default.

I've been back and forth on this, but I believe it's worth to have debug
by default.

Most humans (developers, testers) will want to use the debug version  by
default.  Many build bots want release but they are bots, and humans >
bots, so I don't care that much.

This is part of my initiative of minimizing the scons option mess many
complain about.

diff --git a/common.py b/common.py
index 4b6960c..8372176 100644 (file)
--- a/common.py
+++ b/common.py
@@ -59,7 +59,7 @@ def AddOptions(opts):
                from SCons.Variables.EnumVariable import EnumVariable as EnumOption
        except ImportError:
                from SCons.Options.EnumOption import EnumOption
-       opts.Add(BoolOption('debug', 'debug build', 'no'))
+       opts.Add(BoolOption('debug', 'debug build', 'yes'))
        opts.Add(BoolOption('profile', 'profile build', 'no'))
        opts.Add(BoolOption('quiet', 'quiet command lines', 'yes'))
        opts.Add(EnumOption('machine', 'use machine-specific assembly code', default_machine,