update README.txt to have current version requirements, also used as a mantis test for issue 2920
update README.txt to have current version requirements, also used as a
mantis test for issue 2920


RavenB/opensim,zekizeki/agentservice,AlphaStaxLLC/taiga,rryk/omp-server,QuillLittlefeather/opensim-1,justinccdev/opensim,AlphaStaxLLC/taiga,ft-/opensim-optimizations-wip,zekizeki/agentservice,ft-/opensim-optimizations-wip-extras,AlexRa/opensim-mods-Alex,ft-/arribasim-dev-tests,QuillLittlefeather/opensim-1,M-O-S-E-S/opensim,TomDataworks/opensim,ft-/arribasim-dev-extras,AlphaStaxLLC/taiga,ft-/arribasim-dev-extras,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,BogusCurry/arribasim-dev,AlphaStaxLLC/taiga,ft-/opensim-optimizations-wip-extras,Michelle-Argus/ArribasimExtract,ft-/opensim-optimizations-wip-extras,TomDataworks/opensim,zekizeki/agentservice,ft-/opensim-optimizations-wip-tests,AlexRa/opensim-mods-Alex,N3X15/VoxelSim,ft-/opensim-optimizations-wip-extras,bravelittlescientist/opensim-performance,ft-/arribasim-dev-tests,OpenSimian/opensimulator,ft-/arribasim-dev-extras,ft-/opensim-optimizations-wip-tests,ft-/opensim-optimizations-wip,allquixotic/opensim-autobackup,M-O-S-E-S/opensim,cdbean/CySim,allquixotic/opensim-autobackup,AlphaStaxLLC/taiga,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,N3X15/VoxelSim,ft-/opensim-optimizations-wip-tests,OpenSimian/opensimulator,AlphaStaxLLC/taiga,rryk/omp-server,AlphaStaxLLC/taiga,QuillLittlefeather/opensim-1,TomDataworks/opensim,bravelittlescientist/opensim-performance,OpenSimian/opensimulator,ft-/opensim-optimizations-wip-tests,ft-/arribasim-dev-extras,AlexRa/opensim-mods-Alex,BogusCurry/arribasim-dev,allquixotic/opensim-autobackup,AlexRa/opensim-mods-Alex,allquixotic/opensim-autobackup,rryk/omp-server,allquixotic/opensim-autobackup,ft-/arribasim-dev-tests,TomDataworks/opensim,M-O-S-E-S/opensim,N3X15/VoxelSim,QuillLittlefeather/opensim-1,TechplexEngineer/Aurora-Sim,BogusCurry/arribasim-dev,BogusCurry/arribasim-dev,bravelittlescientist/opensim-performance,RavenB/opensim,bravelittlescientist/opensim-performance,N3X15/VoxelSim,justinccdev/opensim,ft-/opensim-optimizations-wip-tests,ft-/opensim-optimizations-wip,RavenB/opensim,justinccdev/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,TomDataworks/opensim,OpenSimian/opensimulator,ft-/opensim-optimizations-wip,cdbean/CySim,bravelittlescientist/opensim-performance,zekizeki/agentservice,justinccdev/opensim,rryk/omp-server,intari/OpenSimMirror,AlexRa/opensim-mods-Alex,AlexRa/opensim-mods-Alex,allquixotic/opensim-autobackup,intari/OpenSimMirror,RavenB/opensim,Michelle-Argus/ArribasimExtract,ft-/arribasim-dev-extras,QuillLittlefeather/opensim-1,Michelle-Argus/ArribasimExtract,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,Michelle-Argus/ArribasimExtract,TomDataworks/opensim,zekizeki/agentservice,QuillLittlefeather/opensim-1,TechplexEngineer/Aurora-Sim,rryk/omp-server,bravelittlescientist/opensim-performance,cdbean/CySim,Michelle-Argus/ArribasimExtract,N3X15/VoxelSim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,cdbean/CySim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,M-O-S-E-S/opensim,N3X15/VoxelSim,intari/OpenSimMirror,BogusCurry/arribasim-dev,intari/OpenSimMirror,TechplexEngineer/Aurora-Sim,Michelle-Argus/ArribasimExtract,AlphaStaxLLC/taiga,intari/OpenSimMirror,ft-/opensim-optimizations-wip-extras,cdbean/CySim,BogusCurry/arribasim-dev,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,intari/OpenSimMirror,N3X15/VoxelSim,QuillLittlefeather/opensim-1,N3X15/VoxelSim,justinccdev/opensim,cdbean/CySim,ft-/arribasim-dev-tests,ft-/arribasim-dev-tests,RavenB/opensim,zekizeki/agentservice,RavenB/opensim,M-O-S-E-S/opensim,ft-/arribasim-dev-extras,OpenSimian/opensimulator,OpenSimian/opensimulator,ft-/arribasim-dev-tests,TechplexEngineer/Aurora-Sim,justinccdev/opensim,OpenSimian/opensimulator,RavenB/opensim,rryk/omp-server,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,TomDataworks/opensim