Previously, only .wad files can specified without file extension for -iwad command line option
For example, -iwad square1 will load square1.pk3 as IWAD
This reverts commit b8c0e78c91 et al.
Instead, use the already provided access function I_FindName to get the file name from findstate_t.
Also made the contents of findstate_t private so that use of the access functions is required to retrieve the information and direct access triggers a compile error.
The old code went through a list of predefined file names and looked each of them up in a list of predefined directories until it found a match. This made it nearly impossible to add custom IWAD support because the list of valid file names could not be extended.
This has now been switched around to run a scan for matching files on each given directory. With this approach it can look for *.iwad and *.ipk3 as IWAD extensions as well and read an IWADINFO out of these files that can be added to the internal list of IWADs, making it finally possible to define custom IWADs without having to add them to the internal list.
(This isn't fully tested yet so some errors may still occur.)
This reverts commit 81449728d7.
Reverted because it compromises the IWAD file lookup and fixing it properly is not so trivial.
The skipping of adding the file name extension was not only broken, but even after fixing the code does not work if the IWADs are located outside the working directory.
Both 'Adventures of Square' IWADs were missing an entry for base MAPINFO and as a result did not define the common editor numbers.
To prevent this, a new mindefaults MAPINFO was added to zdoom.pk3 which now gets loaded if IWADINFO does not specify a game-specific file.
This minimum setting sets all gamedefaults to a reasonable base value and defines all other things that are required to be defined.
This has an important implication:
Previously the config was loaded before IWADINFO so in order to allow the config to access the data this had to be switched around.
This means that zdoom.pk3 will not be looked for in the global IWAD search paths anymore, but since it shouldn't be there to begin with it should be an acceptable compromise.
As a result the old 'Group' property could be removed and all other means to get a section name were disabled.
As an example, if the code gets 'doom.doom2.commercial' it will use the following sections in this order:
global.autoload
doom.autoload
doom.doom2.autoload
doom.doom2.commercial.autoload.
does not already exist. This way, we can create a default config file without removing anything
from an existing config file if things go wrong early during setup.
SVN r3737 (trunk)
