Update tests

Fish is always executed as ../test/root/bin/fish in these expect tests

tests/expansion.err

@@ -1,13 +1,13 @@
 
 ####################
 # Slices
-fish: Invalid index value
+../test/root/bin/fish: Invalid index value
 echo "$foo[d]"
            ^
-fish: Invalid index value
+../test/root/bin/fish: Invalid index value
 echo $foo[d]
           ^
-fish: Invalid index value
+../test/root/bin/fish: Invalid index value
 echo ()[d]
         ^
 
@@ -16,7 +16,7 @@ echo ()[d]
 
 ####################
 # Catch your breath
-fish: $) is not a valid variable in fish.
+../test/root/bin/fish: $) is not a valid variable in fish.
 echo $$paren
       ^
 

tests/function.err

@@ -7,13 +7,13 @@
 
 ####################
 # Testing -V with changed variables
-fish: function: Illegal function name '-a'
+../test/root/bin/fish: function: Illegal function name '-a'
 function -a arg1 arg2 name2 ; end
 ^
-fish: function: Illegal function name '--argument-names'
+../test/root/bin/fish: function: Illegal function name '--argument-names'
 function --argument-names arg1 arg2 name4 ; end
 ^
-fish: function: Unexpected positional argument 'abc'
+../test/root/bin/fish: function: Unexpected positional argument 'abc'
 function name5 abc --argument-names def ; end
 ^
 
@@ -25,7 +25,7 @@ function name5 abc --argument-names def ; end
 
 ####################
 # Checking reserved names
-fish: function: The name 'test' is reserved,
+../test/root/bin/fish: function: The name 'test' is reserved,
 and can not be used as a function name
 function test; echo banana; end
 ^

tests/status.err

@@ -1,4 +1,4 @@
-<W> fish: An error occurred while redirecting file '.'
+<W> ../test/root/bin/fish: An error occurred while redirecting file '.'
 open: Is a directory
 status: Invalid combination of options,
 you cannot do both 'is-interactive' and 'is-login' in the same invocation

tests/test1.err

@@ -34,7 +34,7 @@
 
 ####################
 # For loops with read-only vars is an error (#4342)
-fish: You cannot use read-only variable 'status' in a for loop
+../test/root/bin/fish: You cannot use read-only variable 'status' in a for loop
 for status in a b c
     ^
 

tests/test5.err

@@ -1,3 +1,3 @@
-fish: No matches for wildcard '*ee*'. See `help expand`.
+../test/root/bin/fish: No matches for wildcard '*ee*'. See `help expand`.
 	case *ee*
 	     ^

tests/test_cmdsub.err

@@ -4,14 +4,14 @@
 
 ####################
 # Command sub at the limit should fail
-fish: Too much data emitted by command substitution so it was discarded
+../test/root/bin/fish: Too much data emitted by command substitution so it was discarded
 
 set b (string repeat -n 512 x)
       ^
 
 ####################
 # Command sub over the limit should fail
-fish: Too much data emitted by command substitution so it was discarded
+../test/root/bin/fish: Too much data emitted by command substitution so it was discarded
 
     set -l x (string repeat -n $argv x)
              ^
@@ -28,7 +28,7 @@ in command substitution
 
 ####################
 # Same builtin in a command substitution is affected
-fish: Too much data emitted by command substitution so it was discarded
+../test/root/bin/fish: Too much data emitted by command substitution so it was discarded
 
 echo this will fail (string repeat --max 513 b) to output anything
                     ^

tests/vars_as_commands.err

@@ -1,6 +1,6 @@
-fish: The expanded command was empty.
+../test/root/bin/fish: The expanded command was empty.
 $EMPTY_VARIABLE
 ^
-fish: The expanded command was empty.
+../test/root/bin/fish: The expanded command was empty.
 "$EMPTY_VARIABLE"
 ^

tests/zero_based_array.err

@@ -1,9 +1,9 @@
-fish: array indices start at 1, not 0.
+../test/root/bin/fish: array indices start at 1, not 0.
 echo $foo[0]
           ^
-fish: array indices start at 1, not 0.
+../test/root/bin/fish: array indices start at 1, not 0.
 echo $foo[ 0 ]
            ^
-fish: array indices start at 1, not 0.
+../test/root/bin/fish: array indices start at 1, not 0.
 echo $foo[ 00 ]
            ^