Speeds up compile.

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

The code uses __BEGIN/END_DECLS from glibc's features.h, actually
sys/cdefs.h, which is deprecated. Get rid of it.

Fixed license information.

Fixed musl-fts dependency. It's only valid for musl.

Removed autoreconf as the patch was removed.

Added PKG_INSTALL for consistency between packages.

Added PKG_BUILD_PARALLEL for faster compilation.

Small cleanups for consistency between packages.

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

libcgroup also contains cgroup-utils, which make it very handy to work
with user defined cgroups settings.
It let's you define cgroups in a json like config file and execute them on the cmdline.

Example:

/etc/cgroup.conf:
----------------
group lowbob {
        cpu { cpu.shares="1"; }
        cpuacct { cpuset.cpu = "0" }
        memory { memory.limit_in_bytes = 10m; }
        blkio { ... }
	...
}
----------------
cgconfigparser -l /etc/cgroup.conf
cgexec -g cpu,memory,blkio:/lowbob cpuintense-task

Signed-off-by: Daniel Danzberger <daniel@dd-wrt.com>