Use RPM macros from lua-devel

This cleans up the spec file by using existing macros, rather than
redefining them. As a side-effect, this improves rebuilding this
package for Flatpak inclusion with prefix=/app, since the
canonical versions are more robust against running without the
lua interpreter in the path -they use a lua macro rather than
shell expansion.

lua-posix.spec

@@ -6,7 +6,7 @@
 
 Name:           lua-posix
 Version:        33.3.1
-Release:        14%{?dist}
+Release:        15%{?dist}
 Summary:        A POSIX library for Lua
 License:        MIT
 URL:            http://luaforge.net/projects/luaposix/
@@ -16,11 +16,7 @@ BuildRequires:  lua-devel
 BuildRequires:  ncurses-devel
 BuildRequires:	lua-lunit
 BuildRequires:  perl-interpreter
-%if 0%{?fedora} || 0%{?rhel} >= 7
-Requires:       lua(abi) = %{luaver}
-%else
-Requires:       lua >= %{luaver}
-%endif
+%{?lua_requires}
 
 %description
 This is a POSIX library for Lua which provides access to many POSIX features
@@ -31,7 +27,7 @@ to Lua programs.
 
 
 %build
-%configure --libdir=%{lualibdir} --datadir=/%{luapkgdir}
+%configure --libdir=%{lua_libdir} --datadir=/%{lua_pkgdir}
 make V=1 %{?_smp_mflags}
 
 
@@ -47,12 +43,15 @@ make V=1 check
 %license COPYING
 %doc AUTHORS ChangeLog NEWS README
 %{_defaultdocdir}/luaposix/
-%{lualibdir}/*
-%{luapkgdir}/*.lua
-%{luapkgdir}/posix/
+%{lua_libdir}/*
+%{lua_pkgdir}/*.lua
+%{lua_pkgdir}/posix/
 
 
 %changelog
+* Wed Jan 22 2020 Owen Taylor <otaylor@redhat.com> - 33.3.1-15
+- Use RPM macros from lua-devel
+
 * Thu Jul 25 2019 Fedora Release Engineering <releng@fedoraproject.org> - 33.3.1-14
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild