Debugger: allow calling SysVarToLStr for variants (via user defined type-names)

components/buildintf/ideoptionsintf.pas

components/fpdebug/fpdbgcallcontextinfo.pas

components/lazdebuggers/lazdebuggerfp/fpdebugdebugger.pas

...onents/lazdebuggers/lazdebuggerfp/fpdebugdebuggerbase.pas

...lazdebuggers/lazdebuggerfp/fpdebugdebuggerworkthreads.pas

...nts/lazdebuggers/lazdebuggerfp/fpdebugvalueconvertors.pas

components/lazdebuggers/lazdebuggerfp/lazdebuggerfp.lpk

components/lazdebuggers/lazdebuggerfp/lazdebuggerfp.pas

components/lazdebuggers/lazdebuggerfp/test/testwatches.pas

components/lazdebuggers/lazdebuggerintf/lazdebuggerintf.pas

components/lazdebuggers/lazdebugtestbase/sources.res

...azdebuggers/lazdebugtestbase/testapps/WatchesValuePrg.pas

...ts/lazdebuggers/lazdebugtestbase/ttestdebuggerclasses.pas

components/lazutils/laz2_xmlcfg.pas

debugger/debuggerstrconst.pp

debugger/watchpropertydlg.lfm

debugger/watchpropertydlg.pp

ide/main.pp

ide/packages/idedebugger/Makefile

ide/packages/idedebugger/Makefile.compiled