Delete left over references to the IL backend.

scripts/final_grade_options.sh-subr:
scripts/mmake.in:
scripts/parse_grade_options.sh-subr:
    As above.

scripts/final_grade_options.sh-subr

@@ -85,7 +85,7 @@ esac
 # The none-C backends do not support single-precision floats, time profiling or
 # memory profiling.
 #
-case $target in il|csharp|java|erlang)
+case $target in csharp|java|erlang)
 	case $single_prec_float in true)
 		echo "--single-prec-float and --target $target are not compatible" 1>&2
 		exit 1 ;;
@@ -108,26 +108,26 @@ case $decl_debug in true)
 esac
 
 #
-# --target IL, C#, Java, Erlang implies --high-level-code
+# --target C#, Java, Erlang implies --high-level-code
 #
-case $target in il|csharp|java|erlang)
+case $target in csharp|java|erlang)
 	highlevel_code=true ;;
 esac
 
 #
-# --target IL, C#, Java, Erlang implies --high-level-data
+# --target C#, Java, Erlang implies --high-level-data
 #
-case $target in il|csharp|java|erlang)
+case $target in csharp|java|erlang)
 	highlevel_data=true ;;
 esac
 
 #
-# --target IL, C#, Java, Erlang implies --gc automatic.
+# --target C#, Java, Erlang implies --gc automatic.
 # NOTE: the .par grade component is meaningless for the non-C backends,
 # so we set it to false if they are being used.  This avoids having to
 # deal with grades like "java.par".
 #
-case $target in il|csharp|java|erlang)
+case $target in csharp|java|erlang)
 	gc_method=automatic
 	thread_safe=false
 	;;

scripts/mmake.in

@@ -30,10 +30,6 @@ Options:
 	--target c:
 		Compile via C, rather than going directly to assembler.
 		This is the default."
-	# XXX `--target il' is not documented because it is not yet
-	#     supported.
-	#--target il:
-	#	Compile via IL, rather than going via C or assembler.
 Help="$Help
 	--mercury-standard-library-directory <directory>
 	--mercury-stdlib-dir <directory>:
@@ -118,11 +114,6 @@ while [ $# -gt 0 ]; do
 		--target)
 			case "$2" in
 				c)	;;
-				il)	# XXX we should do something
-					# sensible for `--target il'
-					echo "$0: warning: \`--target il'" \
-						"option not supported." 1>&2
-					;;
 				*)	echo "$0: invalid argument to" \
 						"\`--target' option" 1>&2
 					exit 1 ;;

scripts/parse_grade_options.sh-subr

@@ -26,8 +26,6 @@
         case "$1" in
             c|C)
                 target=c ;;
-            il|IL)
-                target=il ;;
             csharp|'C#')
                 target=csharp ;;
             java|Java)
@@ -41,9 +39,6 @@
         esac
         ;;
 
-    --il|--IL|--il-only|--IL-only)
-        target=il ;;
-
     --csharp|'--C#'|--csharp-only|'--C#-only')
         target=csharp ;;
 
@@ -274,24 +269,6 @@
         for grade_piece in $grade_pieces
         do
             case "$grade_piece" in
-                il)
-                    target=il
-                    asm_labels=false
-                    non_local_gotos=false
-                    global_regs=false
-                    highlevel_code=true
-                    gcc_nested_functions=false
-                    highlevel_data=true
-                    ;;
-                ilc)
-                    target=il
-                    asm_labels=false
-                    non_local_gotos=false
-                    global_regs=false
-                    highlevel_code=true
-                    gcc_nested_functions=false
-                    highlevel_data=false
-                    ;;
                 csharp)
                     target=csharp
                     asm_labels=false