Update lib-boostrape for 64-bit libraries built with GCC toolchain

Change-Id: Icdc4bf924f660eb137e70ad80c91f68efd30824f
Restore stdint.h for android-3..19 to the original headers

$NDK/tests/standalone/run.sh fail to run with last update on stdint.h
to android-20 level.  Restore stdint.h for fear of the new one breaking
the existing apps

Also fix signal_portable.h to use SIGRTMIN/MAX in old headers
(which got renamed to __SIGRTMIN in new header)

Also change _JBLEN to 1024 which shall be large enough to store CPU
states for forseable future.

Change-Id: Ia9c03558a258c10434eb8e6985adc122532feaa3
Remove non-existanec functions/variables from libc.so

See b.android.com/69319

android-9+
  __evOptMonoTime
  _nres
  __p_default_section_syms
  __p_update_section_syms
  _rand48_add
  _rand48_mult
  _rand48_seed
  _res_opcodes
  __sFext

android-12+
  copy_tm_to_TM
  copy_TM_to_tm
  __dtoa
  _endhtent
  __fremovelock
  _gethtbyaddr
  _gethtbyname
  _gethtbyname2
  _gethtent
  __libc_android_abort
  _mktemp                 # mktemp already exist in header
  __pread64               # add pread64, pwrite64 and ftruncate64 to API >= 12
  __pwrite64
  res_need_init
  __res_ourserver_p
  _sethtent
  __set_syscall_errno
  __sfvwrite
  __timer_table_start_stop
  valid_tm_mon
  valid_tm_wday

android-14+
  __libc_android_log_assert
  __libc_android_log_print
  __libc_android_log_vprint

android-17+
  dlmalloc_walk_free_pages
  dlmalloc_walk_heap
  __get_pc

android-18+
  __get_res_cache
  __libc_init_common
  __libc_preinit

Change-Id: Ie67acf115427e808dde0e33411671b07a888a9b6
Update android-20 wchar.h up to bionic state.

Corresponding changes in bionic:
Ia9bd0785bc42c7b46e2bb6c3d9b9a9d3f769d983
I5abdc7cc3c27c109b7900c94b112f18a95c35763

Change-Id: Ie86fd15226fe552b6f0e60c24debbe1d79f7a332
Signed-off-by: Arseniy Antonov <arseniy.antonov@intel.com>
Merge "Update android-20 wchar.h up to bionic state."
SDK: support generating repository XML with latest XSD.

The latest version of the repository XSD changes:
- archive attributes (os/arch) are now element (host-os)
- system images are not longer in the repository.xml and
  get their own XML file.

Change-Id: If5820a84d5c754b816b17b5713bbdb2597736eff
Merge "Update lib-boostrape for 64-bit libraries built with GCC toolchain"
Merge changes Ie67acf11,Ia9c03558

* changes:
  Remove non-existanec functions/variables from libc.so
  Restore stdint.h for android-3..19 to the original headers
Merge "SDK: support generating repository XML with latest XSD."
auto-merger: merge in from aosp/master