Round of fixes after first Fedora bugzilla review.

- %define switched to %global
- Source0's URL fixed
- Group tags removed
- %post moved after %install
- linux-micro modules now packaged with base lib
- %optflags and %__global_ldflags now passed to make invocations
- various missing %dir in %files sections added
- all %defattr(-, root, root, -) removed
- changelog entries mangled to just a initial one, till it gets packaged
  indeed

Signed-off-by: Gustavo Lima Chaves <[email protected]>