#SwEng

fpclassify fix
EntityManager: rename getExtant -> GetExtantAsHandles, fix its
implementation+call site to avoid dynamic alloc/auto ptr, rename extant
-> IsExtant
vsnprintf2 -> sys_vsnprintf. remove printf.h (function is declared in
sysdep header)
use SUS/posix-ish strcasecmp instead of defining that to the
windows-only stricmp
add cppdoc for ia32/cpu

This was SVN commit r5011.

source/simulation/EntityHandles.cpp

@@ -31,7 +31,7 @@ HEntity::HEntity()
 
 HEntity::~HEntity()
 {
-	if( CEntityManager::extant() )
+	if( CEntityManager::IsExtant() )
 		decRef();
 }