Loosing the documentation

[mlkersten]

Describe the bug
Every MAL command/pattern comes with a multiline comment, which can be retrieved using
SELECT * FROM sys.functions WHERE module='alarm' and function='sleep';

To Reproduce
In the transition to static binding this functionality is gone, while the comments
are still available in the code. It is partly hidden by the NDEBUG, but this
information is also relevant to interpret the EXPLAIN and TRACE results by SQL users.

Expected behavior
This should be fixed and all MAL signature structures should be accessible from SQL

Screenshots
If applicable, add screenshots to help explain your problem.

Software versions

• MonetDB version number [Jul2021, defaultl]
• OS and version: [e.g. Ubuntu 18.04]
• Installed from release package or self-installed and compiled