- A new pthread_setconcurrency(3) page documents pthread_setconcurrency() and pthread_getconcurrency().
- A new pthread_yield(3) page documents pthread_yield().
- The feature_test_macro(7) page adds information on the changes that glibc 2.10 makes
for alignment with POSIX.1-2008, and adds an example program that can be used to display the feature test macros that are implicitly defined by particular glibc versions and as a consequence of explicitly setting macros.
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