newlib/winsup/cygwin/release/2.2.1

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Bug Fixes
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- Revert the following patch from 2.2.0:
When started from a non-Cygwin process, check if $HOME starts with a
slash (absolute POSIX path). Otherwise ignore it.
Addresses discussion starting at
https://cygwin.com/ml/cygwin/2015-08/msg00048.html
- Fix output of /proc/cpuinfo in terms of cpu topology and cache size for
modern CPUs and modern Windows OSes supporting more than 64 logical CPUs.
Addresses: https://cygwin.com/ml/cygwin/2015-06/msg00345.html
- Don't call LsaLookupSids to fetch group information and don't perform RFC2307
owner/group mapping on Samba/NFS if account info is only fetched from local
passwd/group files.
Addresses: https://cygwin.com/ml/cygwin/2015-07/msg00270.html
- Precautionally fix a potential data corruption problem in pipe I/O, only
actually observered in Wine yet. However, MSDN language indicates this
might be a problem on real Windows as well.
Addresses: https://cygwin.com/ml/cygwin/2015-08/msg00225.html
- Include <sys/ucontext.h> from <sys/signal.h> if compiling for POSIX.1-2008.
Addresses: https://cygwin.com/ml/cygwin/2015-08/msg00266.html
- getservent(3) returned the port number in host byte order. Change that to
network byte order as required.
Addresses: https://cygwin.com/ml/cygwin/2015-08/msg00301.html