configure: revise user/group/path settings and reporting

[jimklimov]

Touches on several issues and/or follows up on earlier fixes, including:

• upsmon child process PID stored in upsmon.pid #123
• CI: retain and publish conf_nut_report_feature #1708
• Unable to start nut-driver after upgrade to Fedora 37 #1712
• Add configure option for easy in-place replacement #1714
• Fresh install of NUT - /var/run/nut is not created and permissions not set #1030
• [Issue #1030] Deliver systemd-tmpfiles config to pre-create runtime locations #1037
• nut-common.tmpfiles.in: fix systemd magic vs autoconf magic #1117

[jimklimov]

Updated markdown/asciidoc-friendly chapters in config.nut_report_feature.log e.g. https://ci.appveyor.com/api/buildjobs/gisvyaim9ndxdkfd/artifacts/config.nut_report_feature.log would show:

---

NUT Configuration summary:

• build serial drivers: yes
• build USB drivers: yes (libusb-0.1)
• build neon based XML driver: yes
• enable Avahi support: no
• build Powerman PDU client driver: no
• build Modbus driver: yes
• build IPMI driver: no
• build Mac OS X meta-driver: no
• build i2c based drivers: no
• enable SSL support: yes (OpenSSL)
• enable libwrap (tcp-wrappers) support: no
• enable libltdl (Libtool dlopen abstraction) support: yes
• build nut-scanner: yes
• build CGI programs: yes
• install NUT-Monitor desktop application: no
• install PyNUT binding module: yes
• build and install documentation: skip
• build specific documentation format(s): no
• build and install the development files: yes
• build C++11 codebase (client library, etc.): yes
• build C++ tests with CPPUNIT: yes
• build SNMP drivers: yes
• build SNMP drivers with statically linked lib(net)snmp: no
• User to run as: nobody
• Group of user to run as: nobody

NUT Paths:

• Default installation prefix path: /mingw64
• State file path: /var/state/ups
• Unprivileged PID file path: /var/state/ups
• Privileged PID file path: /var/run
• Driver program path: /mingw64/bin
• CGI program path: /mingw64/cgi-bin
• HTML file path: /mingw64/html
• Config file path: /mingw64/etc
• Data file path: /mingw64/share
• Tool program path: /mingw64/bin
• System program path: /mingw64/sbin
• System library path: /mingw64/lib
• System exec-library path: /mingw64/libexec

NUT Build/Target system info:

• host env spec we run on: x86_64-w64-mingw32
• host env spec we built on: x86_64-w64-mingw32
• host env spec we built for: x86_64-w64-mingw32
• host OS short spec we run on: x86_64-mingw32
• host OS short spec we built on: x86_64-mingw32
• host OS short spec we built for: x86_64-mingw32

NUT Compiler settings:

• CC : gcc
• CFLAGS : -g -O2 -Wno-reserved-identifier -fdiagnostics-color=always -Wno-unknown-warning-option -std=gnu99 -Wno-system-headers -Wall -Wextra -Wsign-compare -pedantic -Wno-format -Wno-error
• CXX : g++
• CXXFLAGS : -g -O2 -Wno-reserved-identifier -fdiagnostics-color=always -Wno-unknown-warning-option -std=gnu++11 -Wno-system-headers -Wall -Wextra -Wno-format -Wno-error
• CPP : gcc -E
• CPPFLAGS :

[jimklimov]

Testing ./ci_build.sh inplace on a deployed system:

...
configure: checking for autoconf macro support of pkg-config module checker
checking for pkg-config... yes
checking for in-place replacement default sysconfdir (better than '${prefix}/etc')... /etc/nut
checking how to run the C preprocessor... gcc -E
...
checking for in-place replacement default group (better than 'nogroup')... nut
checking for in-place replacement default user (better than 'nobody')... Got from /usr/local/ups/lib/pkgconfig/libupsclient.pc
nut
checking if requested user to run as... default
checking setting for User to run as... "nut"
checking if requested group membership of user to run as... default
checking setting for Group of user to run as... "nut"
...
* User to run as:       nut
* Group of user to run as:      nut
...
* Config file path:     /etc/nut
...