Remove XEngine.m_uniqueScripts
Remove XEngine.m_uniqueScripts

This provides no obvious benefit as far as I can tell but has a definite cost in keep script strings in memory for the entire simulator session.

TomDataworks/opensim,QuillLittlefeather/opensim-1,QuillLittlefeather/opensim-1,M-O-S-E-S/opensim,RavenB/opensim,OpenSimian/opensimulator,OpenSimian/opensimulator,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,OpenSimian/opensimulator,TomDataworks/opensim,OpenSimian/opensimulator,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,RavenB/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,TomDataworks/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,RavenB/opensim,RavenB/opensim,QuillLittlefeather/opensim-1,RavenB/opensim,QuillLittlefeather/opensim-1,TomDataworks/opensim,TomDataworks/opensim,TomDataworks/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,RavenB/opensim,QuillLittlefeather/opensim-1,OpenSimian/opensimulator,RavenB/opensim,OpenSimian/opensimulator,M-O-S-E-S/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,OpenSimian/opensimulator,QuillLittlefeather/opensim-1,QuillLittlefeather/opensim-1,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC