RFR: 8274329: Fix non-portable HotSpot code in MethodMatcher::parse_method_pattern

[Magnus Ihse Bursie]

On 2021-10-05 08:41, Ioi Lam wrote:
> As you can see, the CJK characters in the command-line arguments can't 
> even be correctly passed as arguments to the Java main class. If that 
> doesn't work, I can't see how we can get `-XX:CompileCommand` to work 
> with CJK characters. 
So, what does that mean? That we should explicitly limit 
`-XX:CompileCommand`to work with ASCII-only arguments? I accept that we 
might not get all characters to work in all circumstances due to 
limitations in Windows, but the current state of affairs still feel 
unsatisfactory. We should at least have a better failure mode, and 
document any limitations.

/Magnus