meson: correct install location of YAML.pm

When executing an 'meson install' the YAML.pm file is incorrectly
placed in the <prefix>/share/perl5/Git/SVN directory. The YAML.pm
file should be placed in a 'Memoize' subdirectory instead. In order
to correct the location, update the 'install_dir' of the relevant
target in the 'perl/Git/SVN/Memoize/meson.build' file.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: ramsay-jones

perl/Git/SVN/Memoize/meson.build

@@ -3,6 +3,6 @@ test_dependencies += custom_target(
   output: 'YAML.pm',
   command: generate_perl_command,
   install: true,
-  install_dir: get_option('datadir') / 'perl5/Git/SVN',
+  install_dir: get_option('datadir') / 'perl5/Git/SVN/Memoize',
   depends: [git_version_file],
 )