Revert "Tinyxml2 fix leaking consts (#122)" (#123)

This reverts commit ac4e25f.

Author: qjgn

External/tinyxml2.README.md

@@ -14,31 +14,6 @@ The following files have been copied to `External/tinyxml2`:
 - `LICENSE.txt`  
 - `readme.txt`  
 
-### Applied the following patch to hide leaking consts
-
-```
-diff --git a/External/tinyxml2/tinyxml2.cpp b/External/tinyxml2/tinyxml2.cpp
-index 083f54b..db7b53b 100644
---- a/External/tinyxml2/tinyxml2.cpp
-+++ b/External/tinyxml2/tinyxml2.cpp
-@@ -119,6 +119,8 @@ distribution.
-        #define TIXML_FTELL ftell
- #endif
-
-+namespace
-+{
-
- static const char LINE_FEED                            = static_cast<char>(0x0a);                      // all line endings are normalized to LF
- static const char LF = LINE_FEED;
-@@ -135,6 +137,8 @@ static const unsigned char TIXML_UTF_LEAD_0 = 0xefU;
- static const unsigned char TIXML_UTF_LEAD_1 = 0xbbU;
- static const unsigned char TIXML_UTF_LEAD_2 = 0xbfU;
-
-+}
-+
- namespace tinyxml2
- {
-```
 ## Usage
 `tinyxml2` is referenced by source and built together with the target.
 

External/tinyxml2/tinyxml2.cpp

@@ -119,8 +119,6 @@ distribution.
 	#define TIXML_FTELL ftell
 #endif
 
-namespace
-{
 
 static const char LINE_FEED				= static_cast<char>(0x0a);			// all line endings are normalized to LF
 static const char LF = LINE_FEED;
@@ -137,8 +135,6 @@ static const unsigned char TIXML_UTF_LEAD_0 = 0xefU;
 static const unsigned char TIXML_UTF_LEAD_1 = 0xbbU;
 static const unsigned char TIXML_UTF_LEAD_2 = 0xbfU;
 
-}
-
 namespace tinyxml2
 {