[BUGFIX] Improve jumpUrl download of large files

* Prevent output-buffering
* Add Content-Length header

Fixes: #41718
Releases: 6.2, 6.1, 6.0
Change-Id: I8a1a33dc4337a5947bafbad980b73343be637da7
Reviewed-on: https://review.typo3.org/15508
Reviewed-by: Steffen Ritter
Tested-by: Steffen Ritter
[BUGFIX] Skip APC test on php 5.3

travis suddenly shows a failed APC test on PHP 5.3. We have had issue
with the stability of APC tests before, there are some race
conditions in APC. For now we just skip the failing test on PHP 5.3

Resolves: #49682
Releases: 6.2

Change-Id: If52b3a823589d6dc83b52323b8ae57a0227571c9
Reviewed-on: https://review.typo3.org/21913
Reviewed-by: Steffen Ritter
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
[BUGFIX] Exception on thumbnail generation in TCA

In order to test this you are needing a non-FAL
TCA file reference field. Just reference something
here, remove the reference in the filesystem again
and reload the TCA of the record. An exception will
be thrown, because the file isn't available anymore.

Fixes: #49009
Releases: 6.2, 6.1, 6.0
Change-Id: I6eccb3ef77de703551a64f52ab3904cead517c8a
Reviewed-on: https://review.typo3.org/21328
Reviewed-by: Markus Klein
Reviewed-by: Alexander Opitz
Reviewed-by: Ingo Pfennigstorf
Tested-by: Ingo Pfennigstorf
Tested-by: Markus Klein
[TASK] Install steps: Load saltedpasswords and rsaauth

Change factory configuration to include settings for saltedpasswords
and rsaauth so they are loaded by default if installation is
completed. PhpPass is used as default salt algorithm since this
is a better than salted md5 and has no additional system
depencies.

Resolves: #49694
Related: #49162
Releases: 6.2

Change-Id: Ib01628dc2cb80082e8dbd3a5f6c1f24cc5aae589
Reviewed-on: https://review.typo3.org/21924
Reviewed-by: Susanne Moog
Tested-by: Susanne Moog
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer