CVS log for src/tests/lib/libc/regex/t_exhaust.c

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remove the kill in the trace code.

remove not required include files

1. Preallocate the patterns so that out of memory conditions don't happen
   during their allocation, which the test cannot handle properly.
2. Enable building the test without atf so that we can easily debug with
   atf memory allocations interfering
3. Add memory tracing (disabled)

Add more information for the malloc failure.

Mostly merge changes from HEAD upto 20200411

Update require.memory to match the increased rlimit.

Sync with HEAD

PR/54061: Bump memory for jemalloc (a lot).

Sync with HEAD

PR/51832: Ngie Cooper:
- limit memory to 64M
- error msg fixes
- includes fixes

sync with head

this works with much less memory too.

add require.memory=500M

sync with head

add a large timeout for libtre

- Print the symbolic error using regerror, as well as the pattern that caused
  it.
- Add the ability to set the number of repetitions in the pattern from
  cpp since TRE handles things poorly:
	- It runs the machine out of memory with rep=9 (we use rep=9999)
	- It truncates the pattern with rep=9999

stylistic improvements.

simplify.

Add a test to check for DoS attacks against regcomp/regexec. From
Maksymilian Arciemowicz.