RFE: allow RPM macros in .spec Name
This is an alternative solution to #77 (closed) opened in order to support RPM Software Collections and other .spec files which use macros in Name:.
apkg.pkgstyles.rpm:get_template_name parses .spec Name: using regex assuming it's text. When Name is using RPM macros, the parsing and templating fails with error.
#77 (closed) suggested to solve this by always evaluating .spec file but rendering apkg template (apkg srcpkg --render-template) shouldn't require distro-specific tools and it shouldn't depend on RPM macros which are platform-specific.
Instead, I suggest a fallback to project.name when Name can't be extracted from .spec file or it contains RPM macros.
This basically only affects the output directory path, so it should be pretty safe to implement and it's certainly better than failing for all .spec files with macros just because apkg doesn't know howto name the output directory.
Simple example and test should be provided to ensures this always works as it's relatively common.