build: Allow sharing the download directory between PBS instances

Replace the simple wget call with a script, that properly handles
concurrent downloads. A lock file is used to protect each download
and the download is first saved in a temporary file to ensure that
the final file never exists with partial content only.

Additionally the new script shows the download progress to be more
user friendly.

Change-Id: Ib8f9734cfb56824523540fb9ffce00c60683c82f
Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/814
Reviewed-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
packages: Use reconf for multimedia/vlc

Due to linker issues we need to use autotools-reconf.mk and also
provide a patch to check for gettext 0.18.1, because we currently only
support that version instead of the requested 0.18.3.

Change-Id: Iaffb9e3fcda1cab3ac44e0d28146edeacddf8b25
Signed-off-by: Dirk Leber <dirk.leber@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/802
Reviewed-by: Alban Bedel <alban.bedel@avionic-design.de>
packages: Update libs/libsoup from 2.44.1 to 2.44.2

Change-Id: I6dfc2b3d7ae9955e8118ace553accf901d1d9bee
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/824
Reviewed-by: Alban Bedel <alban.bedel@avionic-design.de>
packages: Update libs/libdrm from 2.4.42 to 2.4.45

Change-Id: Id2201aa7daac39d02f7dfc74d9d6961c2947c529
Signed-off-by: Soeren Grunewald <soeren.grunewald@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/825
Reviewed-by: Alban Bedel <alban.bedel@avionic-design.de>