Add __poll and __ppoll to abilist/libc.abilist

[Andreas Jaeger]

Running make check-abi I noticed that these two functions which were 
introduced earlier this year are omitted. Added with the appended patch, 
committed as trivial,

Andreas

diff --git a/abilist/libc.abilist b/abilist/libc.abilist
index dba2fc9..d917e4a 100644
--- a/abilist/libc.abilist
+++ b/abilist/libc.abilist
@@ -2493,6 +2493,8 @@ GLIBC_2.15 i.86-.*-linux.*/thread 
powerpc-.*-linux.*/thread powerpc64-.*-linux.*
   scandirat64 F
  GLIBC_2.16 i.86-.*-linux.*/thread powerpc-.*-linux.*/thread 
powerpc64-.*-linux.*/thread s390-.*-linux.*/thread 
s390x-.*-linux.*/thread sh[34].*-.*-linux.*/thread x86_64-.*-linux.*/thread
   GLIBC_2.16 A
+ __poll_chk F
+ __ppoll_chk F
   aligned_alloc F
   c16rtomb F
   c32rtomb F

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  Andreas Jaeger aj@{suse.com,opensuse.org} Twitter/Identica: jaegerandi
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