If rest of first line after colon is blank then still warn about running in XEngine if engine specified does not exist.
If rest of first line after colon is blank then still warn about running in XEngine if engine specified does not exist.

This is to take account of situations where the user was intending to specify a script engine using colon using its default language.
This probably generates few false positive as scripts are less likely to end a first line colon with a comment for other purposes.

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