[oe] bzip2-full-native_1.0.5.bb problem and possible fix

[Roman I Khimov]

GNUtoo:
> I've:
> >| cp: will not overwrite just-created
>
> `/home/embedded/oetmp_openmoko/work/i686-linux/bzip2-full-native-1.0.5-r0
>/bzip2-1.0.5/install-sh' with
> `/home/embedded/oetmp_openmoko/staging/i686-linux/usr/share/automake-1.9/
>install-sh'

Most probably you've worked with automake 1.9, then switched to automake 
1.10 (or reverse way) and got two automakes in staging directory, then 
this:

> cp ${STAGING_DATADIR_NATIVE}/automake*/install-sh ${S}/

which should expand as (for example)

cp ${STAGING_DATADIR_NATIVE}/automake-1.10/install-sh ${S}/

expands as

cp ${STAGING_DATADIR_NATIVE}/automake-1.10/install-sh \
	${STAGING_DATADIR_NATIVE}/automake-1.9/install-sh ${S}/

Boom.

Had this on automake switch too, not sure how to fix it better, but it's not 
a problem when you only use one automake (and you can clean up stale 
version manually if you switched from one version to another).