[wasm-validate] Error messages for name custom sections are not very concise

[surma]

• When I add a name custom section the the start of a file, the error reads: expected function name count (9) <= function count (0).
• Putting the name section after type section: Memory section can not occur after Name section
• Putting it after the memory section: Global section can not occur after Name section
• Putting it after the memory section: Export section can not occur after Name section
• Putting it after the memory section: Start section can not occur after Name section
• Putting it after the memory section: Code section can not occur after Name section

I feel like the error message should include straight away that a name section must appear after the code section.