releaser.sh: ensure that templates for obsolete components are deleted
Also includes:
- Comments added
- More output added to template-library-core update
- unneeded 'git push' removal in update_version_file

Fixes #29
releaser.sh: update template-library-examples to use the new Quattor version
Fixes #30
Merge pull request #33 from jouvin/template-library-tagging

releaser.sh: ensure that templates for obsolete components are deleted
get-library-templates: add ability to use HEAD rather than a specific version
Merge pull request #35 from jouvin/get-template-library

get-library-templates: add ability to use HEAD rather than a specific version
git-template-library: log invalid option if any
get-template-library: do not dowload SPMA-based OS templates by default
- option --spma added to download them.
- fixes scdb#20
get-template-library: do not download templates for RC versions
* option --release-candidates added to explicitely download them
* Fixes #36
releaser.sh: fix update of Quattor version used in SCDB examples
(done too late)
Merge pull request #38 from jouvin/fix-git-invocations

releaser.sh: fix update of Quattor version used in SCDB examples
Create LICENSE
Merge pull request #37 from jouvin/get-template-library

get-template-library: do not download SPMA-based and RC OS templates by default
Merge branch 'master' of github.com:quattor/release into pod-doc