[PATCH] libpthread: use monotonic clock if present

[Pino Toscano]

Hi,

attached there are few commits for libpthread which allow to use 
monotonic clock, if present, for pthread conditions.
Currently they should have "no effect", since there's no monotonic 
clock, yet, but will allow to automatically use it once available, 
detecting it at runtime.

The only bit I'm not too sure is the linking to rt in case libpthread is 
compiled a glibc addon (as result of the changes by Samuel an hour ago).

-- 
Pino Toscano

0001-__pthread_timedblock-add-an-argument-for-the-clock-i.patch
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0003-pthread_condattr_setclock-allow-a-monotonic-clock-if.patch
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0002-__pthread_timedblock-switch-to-clock_gettime.patch
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