Support for .env files. Some SlackBuilds, like openresolv, support
passing optional variables to the script (OPENVPN=yes, for example).
Dependency handling has been improved, I think. Tested with digikam.
sboget should now get all dependencies correctly, I hope.
Added openresolv.env file.
Better way of determining if a package has a README. This does not
always provide additonal information regarding the SlackBuild, but
it's better than nothing. As noted in a previous commmit, -S will
ignore READMEs.