eglibc: Dont package timezone data

eglibc: Dont package timezone data

* Depend on USE_LDCONFIG to package ldconfig.
* Delete usr/share/zoneinfo from install tree.
* Delete extra binaries installed by getconf.
  POSIX_V6_ILP32_OFF32   POSIX_V7_ILP32_OFF32   XBS5_ILP32_OFF32
  POSIX_V6_ILP32_OFFBIG  POSIX_V7_ILP32_OFFBIG  XBS5_ILP32_OFFBIG
* Fix dangling symlink to /lib/libcidn-2.10.1.so
* in do_stage dont do duplicate install its time
  consuming and complex instead copy the install tree
  into staging. This part it from poky
  http://git.pokylinux.org/cgit.cgi/poky/commit/?h=canadian&id=48a278ed71306f633091ed81d170eeff45ba3759
* Remove tzdata from RPROVIDES

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>