[perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12

Attached are the results of running this test against smoke-me/khw-locale under ASAN, first using a "normal" config, and then disabling HAS_STRXFRM in config.h and building again.

Also attached is a diff of some instrumentation that I added to see when strxfrm() is being called, and the results of that. It is the first call with locale zh_CN.GB18030, but otherwise is unremarkable.

-- 
Respectfully,
Dan Collins

• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by Jarkko Hietaniemi via RT
• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by James E Keenan via RT
• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by James E Keenan via RT
• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by James E Keenan via RT
• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by Karl Williamson via RT
• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by James E Keenan via RT
• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by Dan Collins via RT
• [perl #129953] lib/locale.t: Test failures and segfaulting onFreeBSD-11 and -12 by Dan Collins via RT