[PATCH v3 0/9] gas: scrubber adjustments

[Jan Beulich]

The end goal is to finally deal with long standing issues in, in
particular, macro handling (see e.g. b3446f947bd1 ["gas: retain
whitespace between strings"]). That's the second to final patch.

One of the issues I'm facing in dealing with target specific
adjustments is that there are 5 gas targets which don't even have a
testsuite subdir:
- m32c (no maintainer)
- moxie
- ns32k (no maintainer)
- spu (Alan confirmed no expected issues)
- tic30 (no maintainer)
How is one supposed to have even the slightest idea whether a common
code change breaks such a target (Cc-ing the two maintainers of the
named targets which have one)? I'm already worried enough by targets
having only a pretty "slim" set of test cases. In any event, target
specific changes made in that final patch don't go much beyond what is
needed to have the testsuite pass. I'm pretty sure further changes are
going to be needed in perhaps many places; while I'll try to deal with
those as they're being pointed out, I think target maintainers are in
a better position to change what needs changing, as they ought to have
a better idea than me where whitespace may occur and hence need
skipping.

Doing better at skipping whitespace is, to some degree at least, also
a prereq for -f (or its equivalent #NO_APP at the start of a file) to
be reliable to use. It is probably for a reason that gcc currently
doesn't use this for most targets. Work there is in progress
separately.

Compared to v2, besides re-basing, there are mainly a few more tidying
patches. All patches individually detail what has changed, if anything.

1: have scrubber also respect quoted labels
2: respect CR_EOL also for scrubbing
3: Arm: respect line separators for .symver scrubber special case
4: m32r: move scrubber override to target header
5: Arm: relax gas testsuite whitespace expectations
6: aarch64: relax gas testsuite whitespace expectations
7: MIPS: relax gas testsuite whitespace expectations
8: have scrubber retain more whitespace
9: drop scrubber states 14 and 15

Jan