Fixed tests regenerating using CRLF when running it on Windows

[addonszz]

BPO	35852
Nosy	@serhiy-storchaka, @addonszz
PRs	bpo-35852: Fixed tests regenerating using CRLF when running it on Windows #11697 bpo-35852: Fixed tests regenerating using CRLF when running it on Windows #11697

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2019-02-17.14:23:43.472>
created_at = <Date 2019-01-29.16:27:01.952>
labels = ['tests', '3.8', 'type-feature', 'library']
title = 'Fixed tests regenerating using CRLF when running it on Windows'
updated_at = <Date 2019-02-17.14:23:43.472>
user = 'https://github.com/addonszz'

bugs.python.org fields:

activity = <Date 2019-02-17.14:23:43.472>
actor = 'addons_zz'
assignee = 'none'
closed = True
closed_date = <Date 2019-02-17.14:23:43.472>
closer = 'addons_zz'
components = ['Library (Lib)', 'Tests']
creation = <Date 2019-01-29.16:27:01.952>
creator = 'addons_zz'
dependencies = []
files = []
hgrepos = []
issue_num = 35852
keywords = ['patch', 'patch']
message_count = 2.0
messages = ['334529', '335766']
nosy_count = 2.0
nosy_names = ['serhiy.storchaka', 'addons_zz']
pr_nums = ['11697', '11697']
priority = 'normal'
resolution = None
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue35852'
versions = ['Python 3.8']

[addonszz]

When generating the file on Windows by running

python test/test_profile.py -r

The file has its line ending converted from LF to CRLF, creating noise on the git diff.

[serhiy-storchaka]

PR 11697 keeps existing CRLFs in unmodified part, by writes bare LFs for auto-generated part. The result can contain mixed newlines.

The current code looks correct to me. Just git should be configured to convert LF to platform specific newlines in source files.