provide needed data types if nss.h is not available

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Fixed error when systemd is in DISTRO_FEATURES:
ERROR: The recipe systemd is trying to install files into a sharedarea when those files already exist. Those files and their manifestlocation are:
   /path/to/sysroots/qemux86/usr/lib/libnss_myhostname.so.2
 Matched in manifest-qemux86-nss-myhostname.populate_sysroot
Please verify which recipe should provide theabove files.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>

${D} is expanded by bitbake which means the postinst looks like this:

sed -e '/^hosts:/s/\s*\<myhostname\>//' \
    -e 's/\(^hosts:.*\)\(\<files\>\)\(.*\)\(\<dns\>\)\(.*\)/\1\2 myhostname \3\4\5/' \
    -i /build/scratch/angstrom-v2014.12/build/tmp-angstrom_next-eglibc/work/armv5te-angstrom-linux-gnueabi/systemd/1_216+gitAUTOINC+5d0ae62c66-r0/image/etc/nsswitch.conf

Change ${D} to $D to stop it from being expanded by bitbake.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

These recipes all had a long DESCRIPTION but no SUMMARY; since the
SUMMARY is often displayed alone by package managers and the default
value ("${PN} version ${PV}") isn't particularly useful, we should
always try to set SUMMARY.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>

Meta-linaro layer had own netbase.bbappend which took care of adding
MACHINE name to /etc/hosts to get it resolvable.

Koen Kooi pointed to nss-myhostname as better solution. Tested, works
fine so I add it for other users.

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: Saul Wold <sgw@linux.intel.com>