MFC r362258, r362279: file 5.39

Relnotes: yes

MFC r357757: MFV r357712: file 5.38.

MFC r333923, r354595, r354802:

MFV r354582: file 5.37

MFV r354798:

Apply vendor fixes:

06de62c Detect multiplication overflow when computing sector position
46a8443 Limit the number of elements in a vector (found by oss-fuzz)

Security: CVE-2019-18218

MFC r333919, r333922, r333944, r337442:

Update file to file 5.34 (through 5.33)

MFC r323683:

MFV r323678: file 5.32

MFC r308420: MFV r308392: file 5.29.

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFV r302218: file 5.28.

Relnotes: yes
MFC after: 2 weeks
Approved by: re (gjb)

MFV r298178:

Update file to 5.26.

MFC after: 2 weeks
Relnotes: yes

MFV r288140: update file to 5.25.

MFC after: 1 month

MFV r284234:

Update file to 5.23.

MFC after: 2 weeks

MFV r276568:

Update file to 5.22.

MFC after: 2 weeks

MFV r275696: file 5.21.

MFC after: 2 weeks

Add fstyp(8). This utility, named after its SVR4 counterpart, detects
filesystems. It differs from file(1) in that it gives machine-parseable
output, it outputs filesystem labels, doesn't get confused by other
formats metadata, and runs in Capsicum sandbox.

Differential Revision: https://reviews.freebsd.org/D1255
Relnotes: yes
Sponsored by: The FreeBSD Foundation

MFV r267843: update file/libmagic to 5.19.

MFC after: 2 weeks

Vendor import of file 5.19.