Fix failing tests in bash mode

The new bash parser is experimental — many of the [bash interface tests](https://github.com/binpash/pash/blob/723cd262f72b6fc621f1ce924dad6e8cdb32728d/evaluation/tests/interface_tests/run_bash_tests.sh#L2888) aren’t run because they fail. It would be good if these were fixed.

Notes:
1. The goal is for pash to compile the tests without crashing. These are generally not parallelizable, which is ok.
2. Some of these already work due to intermediate changes, but haven’t been uncommented.

Start with evaluation/tests/interface_tests/run_bash_tests.sh around line 2888 and run the currently enabled bash interface tests to identify the parser crashes. Review the new bash parser entry points and the commented-out tests. Done means the relevant tests are uncommented where they already work and all targeted tests compile without crashing, even when they are not parallelizable.

Written by the indexing model from the issue text.