Bug 1485759 - Pass --build-id=sha1 to the linker instead of --build-id. r=froydnj

BFD ld's --build-id means --build-id=sha1, but with lld it means
--build-id=fast. Both support the explicit --build-id=sha1, so use that.
Gold supports --build-id=sha1 too.
ld64, used for mac builds doesn't support neither --build-id=sha1 nor
--build-id.

js/src/old-configure.in

@@ -492,9 +492,9 @@ if test "$GNU_CC"; then
                   AC_MSG_RESULT([no])
                   LDFLAGS=$_SAVE_LDFLAGS)
 
-    AC_MSG_CHECKING([for --build-id option to ld])
+    AC_MSG_CHECKING([for --build-id=sha1 option to ld])
     _SAVE_LDFLAGS=$LDFLAGS
-    LDFLAGS="$LDFLAGS -Wl,--build-id"
+    LDFLAGS="$LDFLAGS -Wl,--build-id=sha1"
     AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                   AC_MSG_RESULT([no])
                   LDFLAGS=$_SAVE_LDFLAGS)

old-configure.in

@@ -552,9 +552,9 @@ if test "$GNU_CC"; then
                   AC_MSG_RESULT([no])
                   LDFLAGS=$_SAVE_LDFLAGS)
 
-    AC_MSG_CHECKING([for --build-id option to ld])
+    AC_MSG_CHECKING([for --build-id=sha1 option to ld])
     _SAVE_LDFLAGS=$LDFLAGS
-    LDFLAGS="$LDFLAGS -Wl,--build-id"
+    LDFLAGS="$LDFLAGS -Wl,--build-id=sha1"
     AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                   AC_MSG_RESULT([no])
                   LDFLAGS=$_SAVE_LDFLAGS)