Updated license from old LGLP to new LGPL21 in
README.md
dist/packages/com.digia.enginio/meta/installscript.qs
dist/packages/com.digia.enginio/meta/package.xml
dist/packages/com.digia.enginioDocumentation/meta/installscript.qs

Removed unused LICENSE.GPL & LICENSE.LGPL

Added missing LICENSE.LGPLv21 & LICENSE.FDL

Task-number: QTBUG-45042
Change-Id: If7f092a9717a9d2ccb163def785f2cd5c25182d7
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>