Add ETHR_FORCE_INLINE define to hide compiler specific directives

Some win32 specific code does not compile with gcc (mingw-w64) since
'__forceinline' is not supported by gcc. This can be avoided by
defining a new macro ETHR_FORCE_INLINE similar to ETHR_INLINE.
Demote rare debug slogan of message discarding to debug build
Add missing error string to syslog logging in epmd
Add run queue index to process dump info
Add thread index to allocator enomem dump slogan
Replace local mapl/2 (Erlang < 5.0) unique call by a LC
erts: Add etp-lc-dump and etp-ppc-stacktrace macro
erts: Fix system_monitor(large_heap) for non-smp VM

No message for large_heap monitoring was ever sent on non-smp VM.
Bug introduced in R16B.
Don't allow slave nodes to survive their test case

The slave node from release_handler_SUITE:upgrade_supervisor_fail
sometimes survives its test case. Or rather, it is unexpectedly
restarted. Every now and then, on a slow machine, this confuses the
next test case since test_server:start_node might return the old node
name instead of the new. This has been corrected by using
{error_action,reboot} in release_handler_SUITE:upgrade_supervisor_fail
- to make sure the slave node is really terminated on rollback.
Skip test when needed applications are missing

On some test hosts a lot of applications are skipped from the erlang
installation in order to make test go faster.

systools_SUITE:app_start_type_relup uses a few applications which
therefore might not exist. This commit make sure the test is skipped
(instead of fail) if some of the needed applications are missing.
[reltool] Increase timetrap timeout to handle slow test machines
Fixed type spec of erlang:system_info/1
Add initial documentation framework for TypEr.
Merge branch 'sverk/monitor-large-heap-nosmp/OTP-11852' into maint-17

* sverk/monitor-large-heap-nosmp/OTP-11852:
  erts: Fix system_monitor(large_heap) for non-smp VM
Merge branch 'rickard/sys_info_spec/OTP-11859' into maint-17

* rickard/sys_info_spec/OTP-11859:
  Fixed type spec of erlang:system_info/1
Merge branch 'rickard/typer-doc/OTP-11860' into maint-17

* rickard/typer-doc/OTP-11860:
  Add initial documentation framework for TypEr.
Prepare release
Updated OTP version
win32: Fix quoting of paths
kernel: Skip sendfile tests that force async threads

The tests have to be skipped when the emulator running the tests does
not have any async threads.