[Libreoffice] [PATCH] Some OSL cleanup

[Arnaud Versini]

Hi,

The first patch replace the usage of gethostbyname by the reentrant version.

The second and third patch removes internal gethostbyname_r, backtrace and
backtrace_symbols_fd. I'm not sure about these two patches, those functions
are in the libc on all current OS and symbols are not exported.

Thanks in advance
-- 
Arnaud Versini
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