inode numbers can exceed range of perl integers

[hvds]

As determined in discussion of #18788, it is possible for a filesystem to use 64 bit inodes (and for perl to handle them correctly); however if perl is built with 32-bit integers it is not safe to treat them as numbers, even for an equality check.

Areas that were affected by this include:

• File::Copy (fixed in v2.36 by 76d2194)
• PathTools (fixed in v3.81 by 73a0855)
• ExtUtils::MakeMaker (fixed in v7.64, incorporated at d58d6b4)

Partially related, ./Configure was extended to record the size and signedness of struct stat.st_dev in 9b56997, allowing a bug in stat() to be fixed.

@tonycoz does that cover all the changes you know of? Are there any more issues yet to be fixed?

[tonycoz]

Those were all that was needed for perl itself. Some CPAN modules has related issues.