* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.

* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.(cherry picked from commit1e5719a)

* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.(cherry picked from commit1e5719a)

…nch (#117250)*gh-115122: Add --bisect option to regrtest (#115123)* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.(cherry picked from commit1e5719a)*gh-115720: Show number of leaks in huntrleaks progress reports (GH-115726)Instead of showing a dot for each iteration, show:- '.' for zero (on negative) leaks- number of leaks for 1-9- 'X' if there are more leaksThis allows more rapid iteration: when bisecting, I don't needto wait for the final report to see if the test still leaks.Also, show the full result if there are any non-zero entries.This shows negative entries, for the unfortunate cases wherea reference is created and cleaned up in different runs.Test *failure* is still determined by the existing heuristic.(cherry picked from commitaf5f9d6)*gh-83434: Disable XML in regrtest when -R option is used (#117232)(cherry picked from commitd52bdfb)---------Co-authored-by: Petr Viktorin <encukou@gmail.com>

…in branch (pythonGH-117250)*pythongh-115122: Add --bisect option to regrtest (pythonGH-115123)* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.(cherry picked from commit1e5719a)*pythongh-115720: Show number of leaks in huntrleaks progress reports (pythonGH-115726)Instead of showing a dot for each iteration, show:- '.' for zero (on negative) leaks- number of leaks for 1-9- 'X' if there are more leaksThis allows more rapid iteration: when bisecting, I don't needto wait for the final report to see if the test still leaks.Also, show the full result if there are any non-zero entries.This shows negative entries, for the unfortunate cases wherea reference is created and cleaned up in different runs.Test *failure* is still determined by the existing heuristic.(cherry picked from commitaf5f9d6)*pythongh-83434: Disable XML in regrtest when -R option is used (pythonGH-117232)(cherry picked from commitd52bdfb)---------(cherry picked from commit477ef90)Co-authored-by: Victor Stinner <vstinner@python.org>Co-authored-by: Petr Viktorin <encukou@gmail.com>

…ain branch (GH-117250) (#117251)[3.12]gh-83434: Sync libregrtest and test_regrtest with the main branch (GH-117250)*gh-115122: Add --bisect option to regrtest (GH-115123)* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.(cherry picked from commit1e5719a)*gh-115720: Show number of leaks in huntrleaks progress reports (GH-115726)Instead of showing a dot for each iteration, show:- '.' for zero (on negative) leaks- number of leaks for 1-9- 'X' if there are more leaksThis allows more rapid iteration: when bisecting, I don't needto wait for the final report to see if the test still leaks.Also, show the full result if there are any non-zero entries.This shows negative entries, for the unfortunate cases wherea reference is created and cleaned up in different runs.Test *failure* is still determined by the existing heuristic.(cherry picked from commitaf5f9d6)*gh-83434: Disable XML in regrtest when -R option is used (GH-117232)(cherry picked from commitd52bdfb)---------(cherry picked from commit477ef90)Co-authored-by: Victor Stinner <vstinner@python.org>Co-authored-by: Petr Viktorin <encukou@gmail.com>

* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.

* test.bisect_cmd now exit with code 0 on success, and code 1 on  failure. Before, it was the opposite.* test.bisect_cmd now runs the test worker process with  -X faulthandler.* regrtest RunTests: Add create_python_cmd() and bisect_cmd()  methods.