Add missing files.

gas/testsuite/gas/elf/groupauto.s

@@ -0,0 +1,17 @@
+	.text
+	.byte 1
+	.section .foo,"a?","progbits"
+	.byte 1
+
+	.section .text,"axG",%progbits,some_group,comdat
+	.byte 1
+	.pushsection .note.bar,"?","note"
+	.4byte 1f-0f, 3f-2f, 123
+0:	.asciz "somevendor"
+1:	.balign 4
+2:	.byte 1
+	.uleb128 5f-4f
+3:	.balign 4
+	.popsection
+4:	.byte 2
+5:	.byte 3

gas/testsuite/gas/elf/groupautoa.d

@@ -0,0 +1,15 @@
+#readelf: -SW
+#name: automatic section group
+#source: groupauto.s
+
+#...
+[ 	]*\[.*\][ 	]+some_group[ 	]+GROUP.*
+#...
+[ 	]*\[.*\][ 	]+\.text[ 	]+PROGBITS.*[ 	]+AX[ 	]+.*
+#...
+[ 	]*\[.*\][ 	]+\.foo[ 	]+PROGBITS.*[ 	]+A[ 	]+.*
+#...
+[ 	]*\[.*\][ 	]+\.text[ 	]+PROGBITS.*[ 	]+AXG[ 	]+.*
+#...
+[ 	]*\[.*\][ 	]+\.note.bar[ 	]+NOTE.*[ 	]+G[ 	]+.*
+#pass

gas/testsuite/gas/elf/groupautob.d

@@ -0,0 +1,10 @@
+#readelf: -g
+#name: automatic section group
+#source: groupauto.s
+
+#...
+COMDAT group section \[    1\] `some_group' \[some_group\] contains 2 sections:
+[ 	]+\[Index\][ 	]+Name
+[ 	]+\[.*\][ 	]+.text
+[ 	]+\[.*\][ 	]+.note.bar
+#pass