java/openjdk8 java/openjdk11 java/openjdk17 java/openjdk18 java/openjdk19
java/openjdk20 java/openjdk21 java/openjdk22: disable warnings as errors

Generally disable warnings-as-errors for all openjdk ports, removing all
the conditionals we have now for particular architectures and/or
compilers. It does not make sense to have this on by default, unless you
are an upstream maintainer.

PR:		281188
Approved by:	maintainer timeout (2 weeks)
MFH:		2024Q3

(cherry picked from commit 3378cc494de65725a36e8ff5aaa205273521ba52)

java/openjdk11: Update to 11.0.24

(cherry picked from commit d3f2c6d9bebea0509d5b0570e1350f8827168445)

java/openjdk11: remove custom LLVM - build with LLVM from base

Segfaults are no longer observed with current versions of LLVM 17 and 18
in base 13.3 and 14.1, so there is no need to pull such an old version
from ports to build.
For example build java/openjdk11 with LLVM from base and then build
java/eclipse and java/openjfx14 using java/openjdk11: build and run
without errors.

PR:		280056 260319
Approved by:	java (maintainer, timeout 14 days)

(cherry picked from commit 08cc50220f1d71f12d13d7e2c957a5679b02914d)

java/openjdk11: fix build with clang 19

Clang 19 is now more strict about undefined integral expressions used as
constants in enum, which results in errors compiling java/openjdk11,
similar to:

   
/wrkdirs/usr/ports/java/openjdk11/work/jdk11u-jdk-11.0.24-8-1/src/jdk.pack/share/native/common-unpack/constants.h:206:33:
error: expression is not an integral constant expression
      206 |     AO_UNUSED_MBZ             = (-1)<<13, // options bits reserved
for future use.
          |                                 ^~~~~~~~
   
/wrkdirs/usr/ports/java/openjdk11/work/jdk11u-jdk-11.0.24-8-1/src/jdk.pack/share/native/common-unpack/constants.h:206:37:
note: left shift of negative value -1
      206 |     AO_UNUSED_MBZ             = (-1)<<13, // options bits reserved
for future use.
          |                                     ^

Replace the negative value with ~0u to fix this error.

PR:		280560
Approved by:	glewis (maintainer)
MFH:		2024Q3

(cherry picked from commit d2ae63c6feffda05eb643520dd851451ee337f53)