Refactor self-dependent-egg

Add a list self-dependent-eggs and a predicate self-dependent-egg?.

Some comments to explain why it is needed.

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
gen-egg-recipes: add scss

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-scss: add recipe for version 0.4

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
gen-egg-recipes: add pastiche

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-awful-sql-de-lite: add recipe for version 0.4

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-colorize: add recipe for version 0.4.1

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-html-parser: add recipe for version 0.5.0

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-lru-cache: add recipe for version 0.5.3

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-pastiche: add recipe for version 0.14

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-record-variants: add recipe for version 0.5.1

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-sql-de-lite: add recipe for version 0.6.1

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
gen-egg-recipes: handle downcase BSD licenses

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-pastiche: fix license (s/bsd/BSD)

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-awful: update to version 0.39.1

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-colorize: update to version 0.4.2

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
gen-egg-recipes: list eggs in alphabetical order

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
gen-egg-recipes: add http-client

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
gen-egg-recipes: add check-errors to the list of self-dependent eggs

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-blob-utils: add recipe for version 1.0.3

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
chicken-egg-check-errors: add recipe for version 1.13.0

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>