[PATCH 1/3] include/common.h: fix build against musl

[Brian Norris]

On Fri, Apr 24, 2015 at 12:12:51AM +0200, Jörg Krause wrote:
> Like uClibc version older than (not yet released) 0.9.34 musl does not have
> a rpmatch() implementation.
> 
> uClibc defines both __UCLIBC__ and __GLIBC__. So first check for uCibc and its
> version and then for a non glibc implementation (like musl). Note, musl does
> not define __MUSL__.
> 
> Signed-off-by: Jörg Krause <joerg.krause at embedded.rocks>

Applied this one to mtd-utils.git. Thanks!