Add a section to README referencing the INSTALL file.
Repair fallback mechanism

We don't "require" SDL2 strictly, we'd just try out the sdl1 version.
Merge pull request #1096 from stefanbeller/master

Add install section to readme, repair sdl detection fallback mechanism in cmake
Add a script to regenerate the Attributes reference wiki page
Change destination of the Attribute Reference page created.
Merge pull request #1097 from stefanbeller/master

Add a script to regenerate the Attributes reference wiki page
Update command line options in manpage
Merge pull request #1100 from dorkster/man

Update command line options in manpage
Fix a crash when removing duplicates on the ModList

When having unsigned data types comparing > 0 is a tricky business.
This is tested and seems to work

Reported-By: tomreyn
Merge pull request #1101 from stefanbeller/master

Fix a crash when removing duplicates on the ModList
Run the astyle script.

I guess we'd need to teach astyle to keep oneliners oneliners.
But apart from that, there were some tab/space issues.
Merge pull request #1102 from stefanbeller/master

Run the astyle script.
Merge remote-tracking branch 'upstream/master'