Megatest

<verbatim>chlr14208> megatest -list-db-targets
; tracing rmt:test-toplevel-num-items
INFO: (0) client:setup remaining-tries=100
INFO: (0) client:setup server-dat=#(54 chlr14208.ch.intel.com 61459 -1 http 8731 chlr14208), remaining-tries=100
INFO: (0) connected to http://chlr14208.ch.intel.com:61459

Error: (substring-index) bad argument type - not a string: #f

        Call history:

        db.scm:70: mutex-unlock!          
        megatest.scm:680: common:args-get-target          
        common.scm:244: ##sys#get-keyword         
        common.scm:245: args:get-arg      
        margs.scm:17: hash-table-ref/default      
        common.scm:247: args:get-arg      
        margs.scm:17: hash-table-ref/default      
        common.scm:249: getenv    
        megatest.scm:680: db:get-runs-by-patt     
        db.scm:1139: runs:get-std-run-fields      
        db.scm:906: append        
        db.scm:907: keys->keystr          
        keys.scm:25: string-intersperse   
        db.scm:908: string-intersperse    
        db.scm:907: conc          
        substring-index         <--
</verbatim>