Remove various comments related to bash versions we don't support

doc/testing.txt

@@ -192,8 +192,8 @@ git pull
 
     # Run tests on bash-4
 
-./runUnit --outdir log/bash-4 --tool_exec /opt/bash-4.0/bin/bash > $LOG || cat $LOG
-./runCompletion --outdir log/bash-4 --tool_exec /opt/bash-4.0/bin/bash > $LOG || cat $LOG
+./runUnit --outdir log/bash-4 --tool_exec /opt/bash-4.3/bin/bash > $LOG || cat $LOG
+./runCompletion --outdir log/bash-4 --tool_exec /opt/bash-4.3/bin/bash > $LOG || cat $LOG
 
     # Clean up log file
 [ -f $LOG ] && rm $LOG
@@ -207,7 +207,7 @@ Using `--tool_exec` you can specify which bash binary you want to run the test
 suite against, e.g.:
 
 ----------------
-./runUnit --tool_exec /opt/bash-4.0/bin/bash
+./runUnit --tool_exec /opt/bash-4.3/bin/bash
 ----------------
 
 

test/run

@@ -12,7 +12,7 @@ usage() {
     echo "  --tool_exec=    Test against a different bash executable."
     echo "  --debug         Create a dbg.log in the test directory with detailed expect match information."
     echo "  --timeout       Change expect timeout from the default of 10 seconds."
-    echo "  --debug-xtrace  Create an xtrace.log in the test directory with set -x output. Requires bash 4.1."
+    echo "  --debug-xtrace  Create an xtrace.log in the test directory with set -x output."
     echo
     echo "Example run: ./run unit/_get_cword.exp unit/compgen.exp"
 }