INSTALL_BIN turns symlinks into actual files, which increases the total
size for no reason.

Small Makefile cleanups.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

uClibc-ng defines __GLIBCC__ and does not compile in execinfo.h. Disable
it.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

The latter is actually what is used by the build system. Increased
PKG_RELEASE for all packages as this changes the ipk.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

This diff bumps the zstd version to 1.4.0

Tested with NBG6817

Signed-off-by: Amol Bhave <ambhave@fb.com>

Zstandard, or zstd as short version, is a fast lossless compression
algorithm, targeting real-time compression scenarios at zlib-level and
better compression ratios.

This package includes a C library, and a command line utility producing
and decoding .zst, .gz, .xz and .lz4 files.

Signed-off-by: Amol Bhave <ambhave@fb.com>