fix up some message strings that don't include "setup" in the configure command

mesonbuild/build.py

@@ -2917,7 +2917,7 @@ def load(build_dir: str) -> Build:
             f"Build data file {filename!r} references functions or classes that don't "
             "exist. This probably means that it was generated with an old "
             "version of meson. Try running from the source directory "
-            f"meson {build_dir} --wipe")
+            f"meson setup {build_dir} --wipe")
     if not isinstance(obj, Build):
         raise MesonException(load_fail_msg)
     return obj

mesonbuild/msetup.py

@@ -165,7 +165,7 @@ class MesonApp:
             if not reconfigure and not wipe:
                 print('Directory already configured.\n'
                       '\nJust run your build command (e.g. ninja) and Meson will regenerate as necessary.\n'
-                      'If ninja fails, run "ninja reconfigure" or "meson --reconfigure"\n'
+                      'If ninja fails, run "ninja reconfigure" or "meson setup --reconfigure"\n'
                       'to force Meson to regenerate.\n'
                       '\nIf build failures persist, run "meson setup --wipe" to rebuild from scratch\n'
                       'using the same options as passed when configuring the build.'