Never try to execute the file in ldd

Executing a random file is never a good idea.  Treat all arguments as if
they are invoked with __libc_enable_secure, and run them through the known
good dynamic linker.

	* elf/ldd.bash.in: Always run through the dynamic linker, even if
	the file has its own interpreter.  Remove unneeded executable
	check.

Index: glibc-2.19/elf/ldd.bash.in
===================================================================
--- glibc-2.19.orig/elf/ldd.bash.in
+++ glibc-2.19/elf/ldd.bash.in
@@ -150,8 +150,6 @@ for file do
     echo "ldd: ${file}:" $"not regular file" >&2
     result=1
   elif test -r "$file"; then
-    test -x "$file" || echo 'ldd:' $"\
-warning: you do not have execution permission for" "\`$file'" >&2
     RTLD=
     ret=1
     for rtld in ${RTLDLIST}; do
@@ -164,18 +162,6 @@ warning: you do not have execution permi
       fi
     done
     case $ret in
-    0)
-      # If the program exits with exit code 5, it means the process has been
-      # invoked with __libc_enable_secure.  Fall back to running it through
-      # the dynamic linker.
-      try_trace "$file"
-      rc=$?
-      if [ $rc = 5 ]; then
-	try_trace "$RTLD" "$file"
-	rc=$?
-      fi
-      [ $rc = 0 ] || result=1
-      ;;
     1)
       # This can be a non-ELF binary or no binary at all.
       nonelf "$file" || {
@@ -183,7 +169,7 @@ warning: you do not have execution permi
 	result=1
       }
       ;;
-    2)
+    [02])
       try_trace "$RTLD" "$file" || result=1
       ;;
     *)