Log message:
Recursive ABI depends update and PKGREVISION bump for readline-6.0 shlib
major change.

Reported by Robert Elz in PR 41345.

Log message:
Simply and speed up buildlink3.mk files and processing.
This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.

Log message:
Add DESTDIR support.

Log message:
PR 37952: Aleksey Cheusov: more missed tools in USE_TOOLS

Log message:
Update to 2.7.

* Build improvements, use pkgconfig.
* Don't add rpc2's 100ms delayed ack delay in SFTP roundtrip estimate.
* Reduce the number of packets SFTP drops when we receive duplicates.
* Retransmit more worried packets (which 'should' have been acked).
* Only retransmit on timeouts, have the active side of the connection be
  mostly timeout driven to avoid duplicate transfers.

Log message:
Update to 2.6.1:

* Error values were not correctly translated.

Log message:
add empty directory (populated when linked with lua) to PLIST

Log message:
USE_TOOLS+= yacc

Log message:
Check for yacc as bison -y, byacc, yacc, rather than the first two
only and defaulting to yacc.  This package might need a working yacc
in theory, but it doesn't run it.

Log message:
Update to 2.6

* Fail when configure cannot find a usable LEX or YACC binary.
* Fix RetryInterval calculation, we were waiting twice as long as specified.
* Make sure RPC2/Coda defined error values do not collide with system errnos.

Also, shlib major version changed.
patch-aa was merged upstream.