recipes: upgrade from 5.3.2 to 5.4.0

Signed-off-by: Jonathan Liu <net147@gmail.com>
nativesdk-qtbase, nativesdk-qttools, qtbase-native: Drop unnecessary LICENSE/LIC_FILES_CHKSUM

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
qtwebkit: move leveldb dependency to .inc

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
qt5-git: Update to 5.4.0+, latest revision in 5.4 branch

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>