tests/test-hgweb-raw.t

run-tests: fix Python 3 incompatibilities

At one point run-tests.py and test-run-tests.t worked and passed
under Python 3.5. Various changes to run-tests.py over the past
several months appear to have broken Python 3.5 compatibility.

This patch implements various fixes (all related to str/bytes type
coercion) to make run-tests.py and test-run-tests.t mostly work
again. There are still a few failures in test-run-tests.t due to
issues importing mercurial.* modules. But at least run-tests.py
seems to work under 3.5 again.

#require serve

Test raw style of hgweb

  $ hg init test
  $ cd test
  $ mkdir sub
  $ cat >'sub/some text%.txt' <<ENDSOME
  > This is just some random text
  > that will go inside the file and take a few lines.
  > It is very boring to read, but computers don't
  > care about things like that.
  > ENDSOME
  $ hg add 'sub/some text%.txt'
  $ hg commit -d "1 0" -m "Just some text"

  $ hg serve -p $HGPORT -A access.log -E error.log -d --pid-file=hg.pid

  $ cat hg.pid >> $DAEMON_PIDS
  $ (get-with-headers.py localhost:$HGPORT '?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw' content-type content-length content-disposition) >getoutput.txt

  $ killdaemons.py hg.pid

  $ cat getoutput.txt
  200 Script output follows
  content-type: application/binary
  content-length: 157
  content-disposition: inline; filename="some text%.txt"
  
  This is just some random text
  that will go inside the file and take a few lines.
  It is very boring to read, but computers don't
  care about things like that.
  $ cat access.log error.log
  127.0.0.1 - - [*] "GET /?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw HTTP/1.1" 200 - (glob)

  $ rm access.log error.log
  $ hg serve -p $HGPORT -A access.log -E error.log -d --pid-file=hg.pid \
  > --config web.guessmime=True

  $ cat hg.pid >> $DAEMON_PIDS
  $ (get-with-headers.py localhost:$HGPORT '?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw' content-type content-length content-disposition) >getoutput.txt
  $ killdaemons.py hg.pid

  $ cat getoutput.txt
  200 Script output follows
  content-type: text/plain; charset="ascii"
  content-length: 157
  content-disposition: inline; filename="some text%.txt"
  
  This is just some random text
  that will go inside the file and take a few lines.
  It is very boring to read, but computers don't
  care about things like that.
  $ cat access.log error.log
  127.0.0.1 - - [*] "GET /?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw HTTP/1.1" 200 - (glob)

  $ cd ..