Don't show stack traces for user errors.

Refs #5846
Improve error messages for exceptions in AExpressions.

Refs #5846
Implement comparison operators for operands of different types.

Refs #5846
Implement the log() function.

Refs #5846
Allow values as top-level statements.

Refs #5846
Clean up the AExpression class.

Refs #5846
Refactor the config parser's AST.

Refs #5846
Make sure +=, -=, *= and /= behave like they did before.

Refs #5846
Implement the exit() script function.

Refs #5846
Move Addr2Line function to the Utility class.

Refs #5846
Fix AExpression::ExtractPath.

Refs #5846
Allow rterms as object names.

Refs #5846
Clean up the +=, -=, *= and /= operators.

Refs #5846
Fix variable scoping.

Refs #5846
Add missing locks.

Refs #5846
Add missing brace.

Refs #5846
Make it easier to call AExpression::Dump from GDB.

Refs #5846
Some more variable scoping fixes.

Refs #5846
Improve error message for invalid inline service definitions.

Refs #5846
Fix scoping rules for object definitions.

Refs #5846