Eliminate remnants of unused OBJ_TYPE_EXN about python-on-a-chip

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The trouble this introduces is that the assert statement needs the 
AssertionError 
exception and as exceptions become classes (rather than types), the VM will 
require 
classes in order to support the system tests.  In short, this makes 
HAVE_CLASSES a 
requirement for core functionality.  Some smaller-RAM targets will suffer.

Original comment by [email protected] on 18 Jan 2010 at 4:33

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The trouble is remedied by the existing HAVE_ASSERT definition which could be 
disabled 
for smaller targets alleviating the need for classes; however, system tests 
won't be 
able to run on such target platforms.

Original comment by [email protected] on 18 Jan 2010 at 3:34

• Changed state: Started

[GoogleCodeExporter]

Removed 3 places where OBJ_TYPE_EXN was used for managing the EXN type's 
attributes.  
Edited RAISE_VARARGS bytecode to use the new class_isSubclass() function to fix 
the bug 
mentioned above.  Made various fixups where TYPE_EXN was used.  Had to create a 
new 
global "Exception" string so that builtin could be loaded from within interp(). 
 Now 
that HAVE_ASSERT requires HAVE_CLASS, it is relocated within all 
platform/*/pmfeatures.h.  Updated docs/src/AssertStatement.txt (docs build).

Original comment by [email protected] on 18 Jan 2010 at 10:38

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Tests pass.  Builds for avr, arm7 and mbed.  ipm works.

Mainlined directly, see r410

Original comment by [email protected] on 18 Jan 2010 at 10:46

• Changed state: Fixed

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Changing Milestone-r10 to Milestone-r09

Original comment by [email protected] on 7 Mar 2010 at 6:26

• Added labels: Milestone-r09

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Changed r09 to R09

Original comment by [email protected] on 12 Mar 2010 at 8:22

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Original comment by [email protected] on 13 Mar 2010 at 1:30

• Added labels: Milestone-09

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r517
Post mainline checkin.  Added system tests that should be enabled after 
exceptions can be handled.

Original comment by [email protected] on 9 Jul 2010 at 8:29