runtc: rename to run-toochain

Names up to two full words are saner and not too long

run-toolchain

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+
+import os
+import subprocess
+import sys
+
+import common
+
+parser = common.get_argparse(argparse_args={
+    'description': '''Run a Buildroot ToolChain tool like readelf or objdump.
+
+For example, to get some information about the arm vmlinux:
+
+....
+./%(prog)s readelf -- -e "$(./getvar vmlinux)"
+....
+
+Get the list of available tools with:
+
+....
+ls "$(./getvar -a arm host_bin_dir)"
+....
+'''
+})
+parser.add_argument(
+    '--dry',
+    help='Just output the tool path to stdout but actually run it',
+    action='store_true',
+)
+parser.add_argument('tool', help='Which tool to run.')
+parser.add_argument(
+    'extra_args',
+    default=[],
+    help='Extra arguments for the tool.',
+    metavar='extra-args',
+    nargs='*'
+)
+args = common.setup(parser)
+if args.dry:
+    print(common.get_toolchain_tool(args.tool))
+else:
+    sys.exit(common.run_cmd(
+        [common.get_toolchain_tool(args.tool)] + args.extra_args,
+        cmd_file=os.path.join(common.run_dir, 'run-toolchain.sh'),
+        cwd=common.linux_variant_dir,
+        show_cmd=False,
+    ))