elfutils: imported from oldpackages, updated to 0.160

The pkg was imported from oldpackages.
It was updated to latest version, requiring some fixes in patches.

I added myself as maintainer.

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
ffmpeg: Update to 2.4.4

Drop fminf patch; fminf emulation is no longer included upstream.

Signed-off-by: Ian Leonard <antonlacon@gmail.com>
ltrace: add new package at version 0.7.3

ltrace intercepts and records dynamic library calls which are called
by an executed process and the signals received by that process.
It can also intercept and print the system calls executed by the program.
ltrace was originally authored by Juan Cespedes.

It is to library calls what strace is for syscalls.

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Update CONTRIBUTING.md

Add guideline to avoid rolling sources.
Some minor cleanups and clarifications.
python: fix file conflict between python and python-base packages

Signed-off-by: Gergely Kiss <mail.gery@gmail.com>
Tested-by: Gergely Kiss <mail.gery@gmail.com>
libvpx: force to use gcc as linker

libvpx excepts gcc to be used as linker. However, it respects
what is defined in LD. The problem is that LD is defined by
OpenWRT as *-ld.

Forcing the LD env for configure and make solves the problem.
Also, the patch that modified ld call to match what *-ld provides
is not needed anymore.

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>