Add GridStore migration for MSSQL.
Add GridStore migration for MSSQL.

This is done blind since I don't use MSSQL.  If this doesn't work, then one will have to wait for it to be updated for the 0.7.3 opensim release.

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