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
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.
filelib:wildcard() should show broken symlinks

filelib:wildcard("broken_symlink") would return an empty list if
"broken_symlink" is a symlink that does not point to an existing
file.
ssl: Avoid creating a huge session table
mnesia: Improve tests

Need to re-raise the match macro if inside transaction
mnesia: Fix timing issue

Be sure to gather release_tid msgs even though we have a mnesia_down
in the queue.
Edit line 59 to remove "mgr" key from #State record.
Edit line 133 to expect ok instead of {ok, Pid} from snmpm:start_link .
Edit line 136 not to reference Pid variable which was removed above.
The encoding for '-eval Program' should be UTF-8

If file:name_native_encoding() returns 'utf8', any arguments following
the -run option are assumed to be encoded in UTF-8. -eval should
treat is argument the same way.
Add default value for maps:get
Enable tests
Add docs and test for maps:get/3
Test Tweaks
Fix badmatch error when trying to start_link an snmp_test_manager

Was previously unable to start_link an snmp_test_manager due to a
badmatch occurring on line 133.  See traceback here:
http://pastebin.com/1eNYkGTz Edit snmp_test_manager.erl to only expect
the atom ok when it was in turn start_linking an snmpm server.  Also remove reference
to no longer existing Pid variable.  Lastly remove the mgr key from the
State record, as after these changes it was no longer being used.
Merge branch 'snmp_test_manager_badmatch_pid' of github.com:telsacolton/otp into snmp_test_manager_badmatch_pid