- Changed operand read functions to prove exec status return codes in stead of boolean.
- Restructured optional-operand, stringlist and string-match APIs to provide execution status (error code) upon failure.
- Corruption errors are only produced when the binary is actually corrupt. Normal failures should never cause a recompile attempt anymore.
- Simplified optional-operand API.
- Cleaned up test command implementations that use the string-match API.

Fixed logging of mailbox names. It logged the converted mUTF7 version in stead of the original UTF8.

Working towards improving the handling of currupt binaries: defined multiple exit codes for execution functions and defined trace macro for reporting binary corruptions.

Properly implemented dumping a binary including a list of required extensions and support for extension-specific output.

Implemented support for overriding default argument implementations of number, string and string-list.