abort if WINEDEBUG requests functionality that was disabled at configure time

[Mike Frysinger]

if wine is built with --disable-trace or --disable-debug, then using WINEDEBUG 
will accept the respective options without complaining and without actually 
showing any useful information

attached patch checks to see if trace or debug options were disabled at build 
time and if so, issue appropriate errors so people dont waste time wondering 
why they arent getting any output
-mike
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