Update lv2 to enable audacity 2.4.2 to build see boo#1179449

- Update rpmlintrc format to work with rpmlint2.

- Update to version 1.18.0
* Improve documentation.
* Separate extended documentation from primary data.
* core: Add lv2:Markdown datatype.
* core: Deprecate lv2:reportsLatency.
* patch: Fix incorrect type of patch:sequenceNumber.
* port-groups: Remove incorrect type of pg:letterCode.
* port-groups: Replace broken links with detailed Ambisonic
channel descriptions.
* state: Add state:freePath feature.
* ui: Add ui:requestValue feature.
* ui: Add ui:scaleFactor, ui:foregroundColor, and
ui:backgroundColor properties.
* ui: Deprecate ui:binary.
* worker: Improve documentation.

- Build Leap with python2

- Update to release 1.16.0
- Rebase lv2pkgconfig.patch, lv2core.pc is no longer built.
- Remove incorporated reproducible.patch.
- Use python3
- Upstream changes:
*Aggressively deprecate uri-map and event extensions.
*Add lv2_validate utility.
*eg-midigate: Respond to "all notes off" MIDI message.
*eg-sampler: Add waveform display to UI.
*Add core/attributes.h utility header.