Added unit test for basic String functions

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Make String test failures distinguishable

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Adapt substring primitive to Smalltalk's 1-based indexing

Signed-off-by: Stefan Marr <git@stefan-marr.de>
require RPython for travis
adaptions for pypy/travis
enable translation on travis
Don't go into pdb on travis
Move RPython-specific code into its own library module

Let's try to have all theses things in one place, to reduce the differences between PySOM a RPySOM to a minimum.

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Remove dead code

types.MethodType is not used anymore to bind methods

Signed-off-by: Stefan Marr <git@stefan-marr.de>
make the file and string stream type-compatible
Moved StringStream to rlib

Signed-off-by: Stefan Marr <git@stefan-marr.de>
rpythonize the shell

for that, provide own raw_input.
also: crtl-d works now.
Move raw_input to rlib

Signed-off-by: Stefan Marr <git@stefan-marr.de>
convenience for som.sh
continue on newline in the shell

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Conflicts:
	src/som/vm/universe.py
add help flag
add the Byecode/Symbol names at load/translate time
Added a comment to clarify how Symbol/Bytecode names now work

See 81bb9103f110bef0ed7c2ded1ef40b4ed02e8aea

Signed-off-by: Stefan Marr <git@stefan-marr.de>
make the tests runable also using pytest

a pytest is shipped with rpython and typically used there
Added newline at end of file

Signed-off-by: Stefan Marr <git@stefan-marr.de>