Add libnss-role control facility

Add mutual exclusion for show system role (-S or --system) and
f or --file) options.

Refusing to parse further with cmake_build macros for tests due

Muliple fixes and testing support
Add list of roles as additional arguments in rolelst

Fix for librole_write_dir
Clean build with C89 enforced
Add support of system roles management

Add the ability to remove roles and privileges from files in /etc/role.d/.
Add the ability to add roles and privileges to files in /etc/role.d/.

NMU: spec: adapted to new cmake macros.

Validate that each used filename in the role directory ends with .role

Fix roleadd installation
Correct show of project version

Fix install role.d directory (replace mkdir from check section to install)

Add support /etc/role.d directory as addition installable configuration
Replace build system to cmake
Add unit testing

NMU: fixed SConstruct

Fix double memory free with crash before writing (Closes: 37077)

parser.c: fix memory leak
major refactoring
increase buffer count for getpwuid/getgrgid/getgrnam
build with -g, RPM will strip binaries automatically and generate debuginfo

change URL, Packager, add source url
rolelst: add -n arg to print gid instead of group names
print help to stdout
roleadd/roledel: improve descriptions

full refactoring