[newlib-cygwin] Cygwin: move fhandler_cygdrive methods into own source file

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=9db7f4d1dd09a7b498aa16affb1c85f8f7c0e59e commit 9db7f4d1dd09a7b498aa16affb1c85f8f7c0e59e Author: Corinna Vinschen Date: Mon Jan 7 12:29:07 2019 +0100 Cygwin: move fhandler_cygdrive methods into own source file Signed-off-

[newlib-cygwin] Cygwin: rename pipe.cc to fhandler_pipe.cc

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=91ca95ae4a7ee353fb913d31da6c183b9b4a1656 commit 91ca95ae4a7ee353fb913d31da6c183b9b4a1656 Author: Corinna Vinschen Date: Mon Jan 7 12:31:28 2019 +0100 Cygwin: rename pipe.cc to fhandler_pipe.cc move pipe syscalls to syscal

[newlib-cygwin] Cygwin: linkat: support Linux-specific AT_EMPTY_PATH flag

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=9443efe0990ad32c1896717ac7c38ff9c8c57073 commit 9443efe0990ad32c1896717ac7c38ff9c8c57073 Author: Corinna Vinschen Date: Mon Jan 7 19:36:37 2019 +0100 Cygwin: linkat: support Linux-specific AT_EMPTY_PATH flag Signed-off-by

[newlib-cygwin] Cygwin: open: support Linux-specific O_PATH flag

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=b93022a82dc523bcb731c2f69fb6e602c79060b5 commit b93022a82dc523bcb731c2f69fb6e602c79060b5 Author: Corinna Vinschen Date: Mon Jan 7 19:33:11 2019 +0100 Cygwin: open: support Linux-specific O_PATH flag Signed-off-by: Corinna