grim/libgnt

Update all license file headers to point to an https link on gnu's website.

2020-09-21, Gary Kramlich
d390bf1e62e7
Update all license file headers to point to an https link on gnu's website.

Testing Done:
Compiled

Reviewed at https://reviews.imfreedom.org/r/128/
option('doc', type : 'boolean', value : true, yield : true,
description : 'build documentation with gtk-doc')
option('introspection', type : 'boolean', value : true, yield : true,
description : 'build introspection data')