java/openjdk26: Add port Add port for OpenJDK 26.

[haraldei]

Summary

Includes relevant fixes for FreeBSD from mainline development, but
otherwise identical to the upstream release.

Release notes for the upstream release is here:
https://www.oracle.com/java/technologies/javase/26-relnote-issues.html

FreeBSD related fixes on top of the upstream relese:

• Serviceability Agent: fix stack traces in threads.
• Serviceability Agent: simplify implementation of procadd_read_data to read memory from process being traced.
• Serviceability Agent: symbol lookup would occationally fail for native symbols in shared objects.

Sponsored by: The FreeBSD Foundation

[jrm]

The build looks good on 16amd64: https://pkg.ftfl.ca/build.html?mastername=16amd64-default&build=2026-03-19_12h15m13s

Considering the diff [0] between this and java/openjdk25 is quite minimal, I think we're pretty safe.

[0]

% diff -r java/openjdk25 java/openjdk26
diff -r java/openjdk25/Makefile java/openjdk26/Makefile
4d3
< PORTREVISION= 1
17c16
< WWW=          https://openjdk.java.net/projects/jdk/25/
---
> WWW=          https://openjdk.java.net/projects/jdk/26/
129c128
< JDK_MAJOR_VERSION=    25
---
> JDK_MAJOR_VERSION=    26
131,133c130,132
< JDK_PATCH_VERSION=    2
< JDK_BUILD_NUMBER=     10
< BSD_JDK_VERSION=      freebsd-1
---
> JDK_PATCH_VERSION=    0
> JDK_BUILD_NUMBER=     35
> BSD_JDK_VERSION=      1
diff -r java/openjdk25/distinfo java/openjdk26/distinfo
1c1
< TIMESTAMP = 1772104685
---
> TIMESTAMP = 1773920001
10,11c10,11
< SHA256 (freebsd-openjdk-jdk-25.0.2+10-freebsd-1_GH0.tar.gz) = eb8f34a8d0829c66c9eb4decb8b10fbe348a6e99f33fa786067af439f18472a5
< SIZE (freebsd-openjdk-jdk-25.0.2+10-freebsd-1_GH0.tar.gz) = 119535862
---
> SHA256 (freebsd-openjdk-jdk-26+35-1_GH0.tar.gz) = c5db71942e814bcc44c6788536a062678e43856dfaa08549e77fc90e838e0816
> SIZE (freebsd-openjdk-jdk-26+35-1_GH0.tar.gz) = 121724470

[haraldei]

In D55938#1279966, @jrm wrote:

Considering the diff [0] between this and java/openjdk25 is quite minimal, I think we're pretty safe.

The real diff is of course in the updated JDK, not so much in the makefiles, but even there, most of it should now be the upstream changes, not so much in the BSD specific parts.

I'm also more interested in if there's anything I've missed in the surrounding makefiles, Mk/Uses/java.mk etc.

[fuz]

LGTM

java/openjdk26/pkg-descr

2

pkg-descr should be 3 lines or more if possible.

[haraldei]

Thanks for the reviews!

java/openjdk26/pkg-descr

2

I'm aware, but left it as is because it's the same for every openjdk port. I can go through them and expand them all in a separate patch.