Revive and Document RecipeHealth

[sage-etcher]

https://github.com/gobolinux/DevelScripts/blob/master/bin/RecipeHealth

On first glance the following seems true when RecipeHealth check

• downloads git package repo into /Data/Compile/Git/Recipes
• expects packages to be at /Data/Compile/Git/Recipes/trunk
• fails if no health.log file is created at PWD
• requires pip alien package packaging
• returns format package,version,url,size,md5,status
  • where the status is True when the archive downloads correctly (from any method: url, urls, mirror_url, or mirror_urls), and that the size+md5 match those listed in the Recipe.
• reads from health.log, expects each line to use same format as output, skips all packages listed in the file
• outputs in format to both stdout and to health.log (caching)
• hard coded to create 12 processes per cpu thread