ObjFW  History of src/OFLHAArchiveEntry.h of 418f8b3fbf6567f6

Also makes OF(Mutable){LHA,Tar,ZIP}ArchiveEntry conform to it, providing
a common protocol to access archives. file: [dbd8020d72] check-in: [a325d5a1ee] user: js, branch: trunk, size: 2974 [annotate] [blame] [check-ins using] [diff]

There's newer, less common LHA versions that allow 64 bit for the size.
However, for consistency with OFTarArchiveEntry, use unsigned long long
instead of uint64_t. file: [1b1edad7fa] check-in: [6f13f74134] user: js, branch: trunk, size: 3290 [annotate] [blame] [check-ins using] [diff]

The date is meant to be the modification date and the extension is
supposed to override the modification date on old LHA versions where the
modification date is only stored in local time. file: [667eea830b] check-in: [327e67021e] user: js, branch: trunk, size: 3260 [annotate] [blame] [check-ins using] [diff]

__COUNTER__ does not exist in GCC 4.2, and Apple GCC 4.2 is still the
newest compiler available for macOS 10.5. file: [87ef947390] check-in: [ef614a225d] user: js, branch: trunk, size: 4023 [annotate] [blame] [check-ins using] [diff]

This allows ABI stability with the fragile ABI. file: [a2fc14bd84] check-in: [496695d778] user: js, branch: trunk, size: 4046 [annotate] [blame] [check-ins using] [diff]

It is only necessary to extract files, so it makes sense to keep it as
is to be able to list files using an unknown method. file: [7d4437acfc] check-in: [1a6e3816c1] user: js, branch: trunk, size: 3377 [annotate] [blame] [check-ins using] [diff]

This is currently limited to reading uncompressed LHA level 2 files. file: [a130af009d] check-in: [790b5344d6] user: js, branch: trunk, size: 2874 [annotate] [blame] [check-ins using]