OC-Wasm

Changes:

• The pullSignal system call in the computer module now encodes the signal as a CBOR sequence of two elements, the first being a string holding the signal name and the second being an array holding the parameters. It used to encode signals as a single array containing the name followed by the parameters. This makes decoding signals easier, as an application can decode the string, dispatch on signal name, and then decode the array to a typed structure as a single whole CBOR item.

Fixes:

• Modules that declare a maximum linear memory size no longer get 65536× too little memory.
• Modules that declare a maximum linear memory size greater than the amount of RAM installed in the computer now display a more useful error message.