Add missing dependencies for ExtUtilsTypemapsDefault, needed when
building with perl < 5.16. This works for perl 5.16 too.
ExtUtils-ParseXS 3.15 has disappeared from the mirrors, so I had to bump
it to something available from CPAN; version 3.18.
See note from CPAN[1]:
This module [ExtUtilsTypemap] exists merely as a compatibility
wrapper around ExtUtils::Typemaps. In a nutshell, ExtUtils::Typemap
was renamed to ExtUtils::Typemaps because the Typemap directory in
lib/ could collide with the typemap file on case-insensitive file
systems.
The ExtUtils::Typemaps module is part of the ExtUtils::ParseXS
distribution and ships with the standard library of perl starting with
perl version 5.16.
[1] http://search.cpan.org/~smueller/ExtUtils-Typemap-1.00/lib/ExtUtils/Typemap.pm:
e9bee7d9cb