Add the structure for a C++ test suite that mimics the structure of the C++ standard

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73286 91177308-0d34-0410-b5e6-96231b3b80d8

test/make_test_dirs.pl

+#!/usr/bin/perl -w
+#
+# Simple little Perl script that takes the cxx-sections.data file as
+# input and generates a directory structure that mimics the standard's
+# structure.
+use English;
+
+$current_indent_level = -4;
+while ($line = <STDIN>) {
+  $line =~ /^\s*/;
+  $next_indent_level = length($MATCH);
+  if ($line =~ /\[([^\]]*)\]/) {
+    my $section = $1;
+    while ($next_indent_level < $current_indent_level) {
+      chdir("..");
+      $current_indent_level -= 4;
+    }
+
+    if ($next_indent_level == $current_indent_level) {
+      chdir("..");
+    } else {
+      $current_indent_level = $next_indent_level;
+    }
+    mkdir($section);
+    chdir($section);
+  }
+}