Unknown license: GNU General Public License, version 2, with the Classpath Exception

[fede87]

Issue

GNU General Public License, version 2, with the Classpath Exception
seems not to be recognized as a valid license.

Specified license is available here

AboutLibraries version

plugins {
    id "com.mikepenz.aboutlibraries.plugin" version "10.6.2"
}

Steps to reproduce

./gradlew exportLibrariesRelease

At bottom of the command output are found the following lines:

UNKNOWN LICENSES:
GNU General Public License, version 2, with the Classpath Exception
-- [com.android.tools:desugar_jdk_libs:1.1.5]

[mikepenz]

The name seems to differ rom the known licenses as retrieved from the SPDX identifier: https://github.com/mikepenz/AboutLibraries/blob/develop/plugin-build/plugin/src/main/kotlin/com/mikepenz/aboutlibraries/plugin/mapping/SpdxLicense.kt#L173-L178

    <license>
      <name>GNU General Public License, version 2, with the Classpath Exception</name>
      <url>https://github.com/google/desugar_jdk_libs/blob/master/LICENSE</url>
      <distribution>repo</distribution>
    </license>

https://spdx.org/licenses/

Licenses not available via SPDX can be provided manually: https://github.com/mikepenz/AboutLibraries#licenses

[mikepenz]

The license can be provided like it's shown here: 69b5735

(Similar to how the Android Software Development Kit License Agreement one is provided in the demo)

Long-term we are looking in expanding to SpdxLicense 2.0 which has a new exception handling - #878