Conditionally use pthread_setname_np (#27540)

* Conditionally use pthread_setname_np

Fixes #27437.

* pthread_setname_np is on 2.12, not 2.11.

include/grpc/impl/codegen/port_platform.h

@@ -186,7 +186,14 @@
 #endif /* _LP64 */
 #ifdef __GLIBC__
 #define GPR_POSIX_CRASH_HANDLER 1
+#ifdef __GLIBC_PREREQ
+#if __GLIBC_PREREQ(2, 12)
 #define GPR_LINUX_PTHREAD_NAME 1
+#endif
+#else
+// musl libc & others
+#define GPR_LINUX_PTHREAD_NAME 1
+#endif
 #include <linux/version.h>
 #else /* musl libc */
 #define GPR_MUSL_LIBC_COMPAT 1