Extend thread-related debug messages.
All interior pointers must be enabled for finalized allocation.

* include/gc_disclaim.h: Add note about all-interior-pointers requirement.
* fnlz_mlc.c (GC_init_finalized_malloc): Abort with a useful message if all
interior pointers are not enabled.
* tests/disclaim_bench.c, tests/disclaim_test.c: Enable all interior
pointers for tests.
Move finalizer closure to the end of objects.

* fnlz_mlc.c: Move finalizer closure for finalized object kinds to the end
of objects.  This way, we don't require all interior pointers, and GC_base
returns the expected address.
* tests/disclaim_test.c: Improve test coverage.
Remove closure data from GC_register_disclaim_proc.

* include/gc_disclaim.h, fnlz_mlc.c (GC_disclaim_proc, GC_register_disclaim_proc):
Remove CD from typedef and function.
* reclaim.c (GC_reclaim_uninit, GC_reclaim_block): Adjust calls.
* include/private/gc_priv.h, misc.c: Remove CD from object kind struct and
initializers.
Export GC_push manipulation functions and function pointer.

* include/private/gc_priv.h, include/gc_mark.h: Move GC_push_all,
GC_push_conditional and GC_push_other_roots to a public header and adjust
prototypes and comment.
* mark.c, os_dep.c: Adjust prototypes accordingly.
Adjust README filename in README.QUICK
Adjust README.md title and references to doc .html files in it
Default to use libc_stack_end in single-threaded GC on glibc targets

* include/private/gcconfig.h (USE_LIBC_PRIVATES): Define for glibc
(unless DONT_USE_LIBC_PRIVATES is defined).
Fix GC_INIT_CONF_ROOTS in gc.h for Android (define __data_start as weak)

* include/gc.h (GC_INIT_CONF_ROOTS): Define __data_start as weak
symbol for Android (including x86 and MIPS targets); do not call
GC_add_roots if __data_start symbol is unresolved.
Register dynamic libraries via dl_iterate_phdr on Android if possible

* dyn_load.c (HAVE_DL_ITERATE_PHDR): Define also for Android.
* dyn_load.c (dl_iterate_phdr): Declare explicitly for Android (since
no prototype in NDK link.h for ARM).
Register dynamic libraries via dl_iterate_phdr on OpenBSD

* dyn_load.c (HAVE_DL_ITERATE_PHDR): Define for OpenBSD (with release
date 2005.19 or later).
Update AUTHORS file
Remove unused UTHREAD_SP_OFFSET macro (OpenBSD)

* include/private/gcconfig.h (UTHREAD_SP_OFFSET): Do not define (since
no longer used for OpenBSD because pthread_stackseg_np is used to get
thread stack pointer).
Support rthreads introduced in OpenBSD 5.2+

* include/gc_config_macros.h (GC_OPENBSD_UTHREADS): New macro (defined
only if OpenBSD prior to 5.2 release and threads).
* include/private/gc_priv.h (SIG_SUSPEND): Define for OpenBSD (unless
GC_OPENBSD_UTHREADS).
* include/private/pthread_stop_world.h (thread_stop_info): Test
GC_OPENBSD_UTHREADS macro instead of GC_OPENBSD_THREADS.
* misc.c (GC_set_suspend_signal, GC_set_thr_restart_signal,
GC_get_suspend_signal, GC_get_thr_restart_signal): Likewise.
* os_dep.c (GC_dirty_init): Likewise.
* pthread_stop_world.c: Likewise.
* tests/initsecondarythread.c (main): Likewise.
Suppress 'GC_dont_gc deprecated' warning in gc.h if GC_DONT_GC

* include/gc.h (GC_dont_gc): Do not specify GC_ATTR_DEPRECATED if
GC_DONT_GC defined (to avoid deprecated warning in
GC_INIT_CONF_MAX_RETRIES which assigns GC_dont_gc directly).
Move GC_OPENBSD_UTHREADS definition to private/gcconfig.h (OpenBSD)

* include/gc_config_macros.h (GC_OPENBSD_UTHREADS): Move definition
to gcconfig.h (i.e., do not export to client code).
Use pthread API to operate thread-local data on Linux if no compiler TLS

* include/private/thread_local_alloc.h (USE_PTHREAD_SPECIFIC): Define
for GC_LINUX_THREADS (instead of default USE_CUSTOM_SPECIFIC) if
compiler TLS is unavailable (e.g., for linux/arm).
Workaround 'unresolved __tls_get_addr' error for Android NDK clang/mips

* include/private/thread_local_alloc.h (USE_COMPILER_TLS): Do not use
for Android NDK Clang/mips (to workaround "unresolved __tls_get_addr"
linker error).
Tag GC malloc routines with alloc_size attribute for Clang 3.2+

* include/gc_config_macros.h (GC_ATTR_ALLOC_SIZE): Define as alloc_size
attribute for Clang 3.2+ as well.
Workaround 'unresolved __tls_get_addr' error for Android NDK Clang/x86

* include/private/thread_local_alloc.h (USE_COMPILER_TLS): Do not use
for Android NDK Clang (to workaround "unresolved __tls_get_addr" linker
error reported both by clang/x86 and clang/mips).