Fix some docs and put c16 into irr namespace.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2457 dfc29bdd-3216-0410-991c-e03cc46cb475

include/irrAllocator.h

@@ -7,6 +7,7 @@
 
 #include "irrTypes.h"
 #include <new>
+// necessary for older compilers
 #include <memory.h>
 
 namespace irr

include/irrTypes.h

@@ -119,6 +119,9 @@ typedef unsigned short wchar_t;
 #endif // microsoft compiler
 #endif // _IRR_WINDOWS_API_
 
+namespace irr
+{
+
 //! Should the wide character version of the FileSystem be used
 #if defined(_IRR_WCHAR_FILESYSTEM)
 	//! 16 bit character variable. Used for unicode Filesystem and unicode strings
@@ -128,6 +131,8 @@ typedef unsigned short wchar_t;
 	typedef char c16;
 #endif
 
+} // end namespace irr
+
 //! define a break macro for debugging.
 #if defined(_DEBUG)
 #if defined(_IRR_WINDOWS_API_) && defined(_MSC_VER) && !defined (_WIN32_WCE)

include/matrix4.h

@@ -13,7 +13,12 @@
 #include "rect.h"
 #include "irrString.h"
 
+// enable this to keep track of changes to the matrix
+// and make simpler identity check for seldomly changing matrices
+// otherwise identity check will always compare the elements
 //#define USE_MATRIX_TEST
+
+// this is only for debugging purposes
 //#define USE_MATRIX_TEST_DEBUG
 
 #if defined( USE_MATRIX_TEST_DEBUG )