Unsupported gentoo versions

[ziadhany]

From running VulnerableCode Gentoo importer V2, we have some issues with these versions that should be supported:

InvalidVersion constraints version: 1.3* error:'1.3*' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 3.24.48:3 error:'3.24.48:3' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 3.24.48:3 error:'3.24.48:3' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 7.3* error:'7.3*' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 7.4* error:'7.4*' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 7.4* error:'7.4*' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 6.9.3:6 error:'6.9.3:6' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 6.9.3:6 error:'6.9.3:6' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 7.3* error:'7.3*' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 7.4* error:'7.4*' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 7.3* error:'7.3*' is not a valid <class 'univers.versions.GentooVersion'>
InvalidVersion constraints version: 7.4* error:'7.4*' is not a valid <class 'univers.versions.GentooVersion'>