devel/libosinfo: update to 1.0.0 and handle split

libosinfo as of 1.0.0 consists of 3 packages:

• sysutils/osinfo-db-tools: contains the CLI tools
• misc/osinfo-db: contains database with OS data
• devel/libosinfo: the library

This commit does the following:

• devel:libosinfo: update to 1.0.0
• sysutils/osinfo-db-tools: add new port version 1.0.0
• misc/osinfo-db: add new port version 20160728
• UPDATING: document this split and add a note about updating handling because of moved files across the packages that could result in a conflict

Differential Revision: D8455