ld: Find and run some tests using a wildcard pattern

Find the ld-script/provide-*.d tests using a wildcard, then run them in
a loop.  This will make it easier to add more tests in the future.  Some
associated clean up is required.

ld/ChangeLog:

	* testsuite/ld-scripts/provide-3.d: Add xfail directive.
	* testsuite/ld-scripts/provide-4.d: Use new map file name.
	* testsuite/ld-scripts/provide-5.d: Use new map file name.
	* testsuite/ld-scripts/provide-4-map.d: Renamed to...
	* testsuite/ld-scripts/provide-4.map: ...this.
	* testsuite/ld-scripts/provide-5-map.d: Renamed to...
	* testsuite/ld-scripts/provide-5.map: ...this.
	* testsuite/ld-scripts/provide.exp: Move xfail into provide-3.d
	file, and run tests in a loop.

ld/ChangeLog

@@ -1,3 +1,15 @@
+2018-01-11  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* testsuite/ld-scripts/provide-3.d: Add xfail directive.
+	* testsuite/ld-scripts/provide-4.d: Use new map file name.
+	* testsuite/ld-scripts/provide-5.d: Use new map file name.
+	* testsuite/ld-scripts/provide-4-map.d: Renamed to...
+	* testsuite/ld-scripts/provide-4.map: ...this.
+	* testsuite/ld-scripts/provide-5-map.d: Renamed to...
+	* testsuite/ld-scripts/provide-5.map: ...this.
+	* testsuite/ld-scripts/provide.exp: Move xfail into provide-3.d
+	file, and run tests in a loop.
+
 2018-01-11  Andrew Burgess  <andrew.burgess@embecosm.com>
 
 	* ldexp.c (exp_print_tree): Use '=' instead of ',' when printing

ld/testsuite/ld-scripts/provide-3.d

@@ -1,3 +1,4 @@
 #source: provide-3.s
 #ld: -T provide-3.t
 #error: symbol defined in linker script and object file
+#xfail: "*-*-*"

ld/testsuite/ld-scripts/provide-4.d

@@ -1,7 +1,7 @@
 #source: provide-2.s
 #ld: -T provide-4.t
 #PROG: nm
-#map: provide-4-map.d
+#map: provide-4.map
 #...
 0+3 A baz
 0+2000 D foo

ld/testsuite/ld-scripts/provide-5.d

@@ -1,6 +1,6 @@
 #source: provide-5.s
 #ld: -T provide-5.t
 #PROG: nm
-#map: provide-5-map.d
+#map: provide-5.map
 #...
 0+10 A foo

ld/testsuite/ld-scripts/provide.exp

@@ -36,11 +36,11 @@ if [istarget "x86_64-*-mingw*"] then {
   set LDFLAGS "$LDFLAGS --image-base 0"
 }
 
-run_dump_test provide-1
-run_dump_test provide-2
-setup_xfail *-*-*
-run_dump_test provide-3
-run_dump_test provide-4
-run_dump_test provide-5
+set test_list [lsort [glob -nocomplain $srcdir/$subdir/provide-*.d]]
+foreach test_file $test_list {
+    set test_name [file rootname $test_file]
+    verbose $test_name
+    run_dump_test $test_name
+}
 
 set LDFLAGS "$saved_LDFLAGS"