gstreamer1.0-plugins-ugly: Transition to meson based builds

gstreamer1.0-plugins-ugly: Transition to meson based builds

Following modifications were done:

- Remove reference to autotools/M4 related patch:
  [0001-introspection.m4-prefix-pkgconfig-paths-with-PKG_CON.patch]

- Convert all packageconfigs from using autotools syntax to meson

- Replace EXTRA_OECONF with EXTRA_OEMESON

- gettext handling now part of gstreamer1.0-plugins-common.inc.

- Align fork recipe to match upstream from oe-core

Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>