minor: add a bit more method doc to IInventoryService.GetItem()
minor: add a bit more method doc to IInventoryService.GetItem()

Michelle-Argus/ArribasimExtract,BogusCurry/arribasim-dev,OpenSimian/opensimulator,TomDataworks/opensim,QuillLittlefeather/opensim-1,M-O-S-E-S/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,M-O-S-E-S/opensim,justinccdev/opensim,TomDataworks/opensim,BogusCurry/arribasim-dev,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,bravelittlescientist/opensim-performance,allquixotic/opensim-autobackup,ft-/opensim-optimizations-wip-extras,ft-/opensim-optimizations-wip-extras,QuillLittlefeather/opensim-1,RavenB/opensim,rryk/omp-server,rryk/omp-server,QuillLittlefeather/opensim-1,TomDataworks/opensim,allquixotic/opensim-autobackup,BogusCurry/arribasim-dev,allquixotic/opensim-autobackup,M-O-S-E-S/opensim,ft-/arribasim-dev-extras,ft-/opensim-optimizations-wip-extras,allquixotic/opensim-autobackup,TomDataworks/opensim,Michelle-Argus/ArribasimExtract,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,bravelittlescientist/opensim-performance,ft-/arribasim-dev-tests,TomDataworks/opensim,BogusCurry/arribasim-dev,ft-/arribasim-dev-tests,bravelittlescientist/opensim-performance,QuillLittlefeather/opensim-1,bravelittlescientist/opensim-performance,OpenSimian/opensimulator,M-O-S-E-S/opensim,ft-/arribasim-dev-extras,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,QuillLittlefeather/opensim-1,allquixotic/opensim-autobackup,M-O-S-E-S/opensim,RavenB/opensim,justinccdev/opensim,RavenB/opensim,BogusCurry/arribasim-dev,justinccdev/opensim,ft-/arribasim-dev-extras,ft-/arribasim-dev-tests,OpenSimian/opensimulator,RavenB/opensim,Michelle-Argus/ArribasimExtract,ft-/opensim-optimizations-wip,ft-/arribasim-dev-tests,TomDataworks/opensim,ft-/opensim-optimizations-wip-tests,Michelle-Argus/ArribasimExtract,OpenSimian/opensimulator,justinccdev/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,RavenB/opensim,QuillLittlefeather/opensim-1,ft-/opensim-optimizations-wip,justinccdev/opensim,rryk/omp-server,ft-/opensim-optimizations-wip-extras,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,ft-/opensim-optimizations-wip-tests,M-O-S-E-S/opensim,OpenSimian/opensimulator,allquixotic/opensim-autobackup,ft-/opensim-optimizations-wip-tests,ft-/opensim-optimizations-wip-tests,justinccdev/opensim,rryk/omp-server,QuillLittlefeather/opensim-1,bravelittlescientist/opensim-performance,Michelle-Argus/ArribasimExtract,rryk/omp-server,M-O-S-E-S/opensim,ft-/opensim-optimizations-wip,ft-/opensim-optimizations-wip-tests,Michelle-Argus/ArribasimExtract,RavenB/opensim,ft-/opensim-optimizations-wip-extras,ft-/arribasim-dev-extras,rryk/omp-server,bravelittlescientist/opensim-performance,ft-/arribasim-dev-tests,RavenB/opensim,ft-/arribasim-dev-tests,ft-/opensim-optimizations-wip,BogusCurry/arribasim-dev,ft-/arribasim-dev-extras,ft-/arribasim-dev-extras,OpenSimian/opensimulator,OpenSimian/opensimulator