busybox: Rename bbappend to match new version, update defconfig

* New defconfig is based on oe-core version with the same changes like
  old defconfig had (disabled FEATURE_NON_POSIX_CP, BUNZIP2, GUNZIP,
  GZIP, UDHCPC and enabled TZSET)
* One exception is that LOCALE_SUPPORT is now disabled so as to match
  the configuration from HP webOS.

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Change-Id: I3086d8da7b25a60e645c06d4483c6d222b09ef9f
Reviewed-on: http://g2g.palm.com/1105
Reviewed-by: Herb Kuta <herb.kuta@palm.com>
Reviewed-by: Martin Jansa <martin.jansa@palm.com>
Tested-by: Martin Jansa <martin.jansa@palm.com>
Reviewed-by: Susan Montooth <susan.montooth@palm.com>