std.zip: integrity of local file headers

[dlangBugzillaToGithub]

bugzilla (@berni44) reported this on 2019-10-10T18:40:34Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=20291

Description

Taken from #20027:

Rejects local file headers that diverge from the central directory.

Rejects local file headers with invalid combinations of bit 3, crc32 and compressed or uncompressed sizes.

Rejects data descriptors that overflow.

Rejects unused and reserved flags.

Rejects unequal compressed and uncompressed sizes when a file is store uncompressed.