RFR: 8351138: Running subset of gtests gets error printing result information

[SendaoYan]

Hi all,

This PR fix the makefile bug when there is no gtest 'disable tests' then report syntax error.

Before this PR makefile used below command to get the 'disable tests' number, when there is no 'YOU HAVE [0-9]+ DISABLED TEST' string line in gtest result file gtest.txt, this gawk command will not print anything, so shell report syntax error later.


gawk '/YOU HAVE [0-9]+ DISABLED TEST/ { if (match($0, /[0-9]+/, arr)) { print arr[0]; found=1; } if (!found) { print 0; } }' build/linux-x86_64-server-release/test-results/gtest_Align_server/gtest.txt


After this PR makefile will use below command to get the 'disable tests' number.


gawk '/YOU HAVE [0-9]+ DISABLED TEST/ { if (match($0, /YOU HAVE ([0-9]+) DISABLED TEST/, arr)) { print arr[1]; found=1; } } END { if (!found) print 0; }' build/linux-x86_64-server-release/test-results/gtest_Align_server/gtest.txt


Additional testing:

- [x] make test TEST=gtest:Align > test-Alian.log, which return 0 disable test
- [x] time make test TEST=gtest > test-all.log, which return 15 disable tests

[test-all.log](https://github.com/user-attachments/files/19074190/test-all.log)
[test-Alian.log](https://github.com/user-attachments/files/19074189/test-Alian.log)

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Commit messages:
 - 8351138: Running subset of gtests gets error printing result information

Changes: https://git.openjdk.org/jdk/pull/23904/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23904&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8351138
  Stats: 5 lines in 1 file changed: 0 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/23904.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23904/head:pull/23904

PR: https://git.openjdk.org/jdk/pull/23904