Log Message:
boehm-gc: update to 8.0.4.

== [8.0.4] 2019-03-02 ==

* Avoid a full GC when growing finalizer tables if in incremental mode
* Avoid potential race in hb_sz access between realloc and reclaim_block
* Avoid test.o rebuild on tests folder timestamp change (Makefile.direct)
* Avoid unexpected heap growth in gctest caused by GC_disable
* Ensure result of every variant of MS_TIME_DIFF has unsigned long type
* Fix 'duplicate symbol' error for tests using multiple static libs (OS X)
* Fix 'undefined reference to __data_start' linker error (Android/aarch64)
* Fix 'unexpected mark stack overflow' abort in push_all_stack
* Fix 'wrong __data_start/_end pair' error on Android
* Fix BSD_TIME variant of MS_TIME_DIFF for the case of a.tv_usec < b.tv_usec
* Fix GetThreadContext stale register values use if WoW64 (Win32)
* Fix invalid initializer of CLOCK_TYPE variables if BSD_TIME
* Fix thread_info() count argument value (OS X)
* Support de_win.c compilation by Makefile.direct (cord/de)