lot of enhancements, improvements and bugfixes
- new spec-centric logic and src prep setup
- install command now does recursive rpm building and install
- support for RHEL5 rpm packaging on EL5
- reduce usage of rpmquery to save time and bandwidth
- handle .spec file as arg or found file
- install no longer fails if missing devel deps
- don't copy cached tarball every time
- shorter URL
- clean @ and \ quotes in description
- capitalize start of summary and description
- new commands: prep, depends, requires, builddep
- generates deps for extra-libraries, build-tools and pkgconfig-depends
- short aliases for commands
- fix handling of LGPL-2.1
- backup suffix changed to .cblrpm