Proposal for new syscalls: getrusagex and waitx

[Matt Thomas <matt%3am-software.com@localhost>]

I'd to add return some additional data in getrusage or wait4.   
Extending struct rusage seems to be a losing proposition since I will  
need to version the syscalls and provide compatiblity shims.  I might  
as well just add variants that return proplib dictionaries with the  
information.

int getrusagex(int who, struct plistref *dict)
int waitx(pid_t wpid, int *status, int options, struct plistref  
*rusage);

As for the items I want to add, a description of those can wait for  
later.
Let the flaming begin...