Call I_PrecacheSounds() in Heretic/Hexen startup code so that sounds are
resampled for libsamplerate users.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2680
Split Heretic savegame code into a separate file.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2681
Add portable functions to read integers from savegame files and use
these instead of reading directly from memory buffers.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2682
Add portable functions to read/write player_t structures and use this
rather than copying chunks of memory.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2683
Use portable functions to read/write mobj_t structures.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2684