Fix Mantis Issue 3032: AddressSanitizer: SEGV on unknown address 0x00000000f000 in texture_info::LoadTexture()

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10567 387891d4-d844-0410-90c0-e4c51a9137d3
Fix Mantis Issue #3033: AddressSanitizer: global-buffer-overflow in shockwave_move()

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10568 387891d4-d844-0410-90c0-e4c51a9137d3
Increase Xcode and Xcode4 version and filename consistency with other platforms.

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10569 387891d4-d844-0410-90c0-e4c51a9137d3