fix egrep warnings

newer distros getting aggressive about this decprecation

Author: rurban

bootstrap/parse/run_pegparser.sh

@@ -13,5 +13,5 @@
 # limitations under the License.
 
 #!/bin/bash
-files=$(find ../.. -name '*.rn' | egrep -v 'escapeatend|syntaxError')
+files=$(find ../.. -name '*.rn' | grep -E -v 'escapeatend|syntaxError')
 ./pegparser $files

runerrors.sh

@@ -14,7 +14,7 @@
 #
 #!/bin/bash
 for test in errortests/*.rn; do
-  result=$(./runl "$test" | egrep "(Exiting due to error|Exception)")
+  result=$(./runl "$test" | grep -E "(Exiting due to error|Exception)")
   if [[ "$result" != "" ]]; then
     echo "$test passed"
   else

runtests.sh

@@ -49,7 +49,7 @@ for test in errortests/*.rn; do
   executable=$(echo "$test" | sed 's/\.rn$//')
   result=$(./rune "$args" -x "$test" | grep "Exiting due to error")
   if [[ "$result" == "" ]]; then
-    result=$("./$executable" | egrep "(Exception|Panic)")
+    result=$("./$executable" | grep -E "(Exception|Panic)")
   fi
   if [[ "$result" != "" ]]; then
     echo "$test passed"