Add names to errno module. Related to issue #246.
Add names to errno module. Related to issue #246.

kikocorreoso/brython,kikocorreoso/brython,brython-dev/brython,jonathanverner/brython,brython-dev/brython,Hasimir/brython,Hasimir/brython,jonathanverner/brython,Hasimir/brython,brython-dev/brython,kikocorreoso/brython,jonathanverner/brython,jonathanverner/brython,Hasimir/brython