- remove untrusted warning (eterbug #11593)

- Update nxssh 7.5 to 9.6
- remove openssl 1.1 build patch

- Replace ppol() by nx_proxy_ppoll()
- Transfer nx_set_socket_options() to ssh_packet_set_interactive()

**clientloop.c:**
- Replace ppol() by nx_proxy_ppoll()
- Transfer bypass server_alive_check() при nx_switch_internal == 1
- Transfer nx_close_proxy_connection() on signal and completion

- Transer ssh_webproxy_connect() function
- Transer NX conditional error messages with `NX>207` prefix
- Transer NX-specific host key verification logic

**sshconnect2.c:**
- Reorder authentication methods for NX modes
- Transer password reading from stdin for NX modes
- Transer retry limit for `NxAuthOnlyModeEnabled`

**readpass.c:**
- Move NX wrapper `read_passphrase()` to take into account new 9.6 features (SSH_ASKPASS_REQUIRE, prompt hints)

- Added NxModeEnabled, NxAuthOnlyModeEnabled, NXStdinPassEnabled, NXServerMode, NxAdminModeEnabled to ssh.c
- Args: Rename -B to -nxswitch and -E to -nxnoconfig
- Addes NX preferred options (disable TTY, escape, compression; enable X11)
- Transer NX specfic code to ssh.c

- Added proxy.o to SSHOBJS, NX-compile and linking flags to Makefile.in
- Rename target: ssh -> nxssh, sshd ->nxsshd, ssh-keygen -> nxssh-keygen

Update 7.5p1 to vanilla 9.6p1 source
from https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.6p1.tar.gz

- add zlib-devel to BuildRequires

- fix RedOS build

- fix build for openssl >= 1.1

- fix build

- fix build
- 7.5-alt11
- fix build

- fix openssl 1.1 detection, use grep -a for check text in binary

- (CI): added build for c7
- revert "(CI): added build for c7"

This reverts commit b2244e19.

- fix bug with kerberos build missing, switch to --with-kerberos allowing
- drop gcc-c++ buildrequire

- (CI): added test build

- cleanup spec, pack only nxssh

- added path validation for ssh config (eterbug #12807)

- restore fix-openssl-1.1.patch

- update build requires: use nx-libs

- update build requires

- fixed openssh confdir (eterbug #12796)