Add a few patches to let the port build with clang.

svn path=/head/; revision=319588

sysutils/xstow/files/patch-src__leoini.h

@@ -0,0 +1,16 @@
+--- src/leoini.h~	2013-06-01 22:28:45.000000000 +0300
++++ src/leoini.h	2013-06-01 22:32:05.000000000 +0300
+@@ -260,11 +260,9 @@
+ 
+     if( start == std::string::npos ||
+ 	end == std::string::npos )
+-      s = "";
+-    else
+-      s = s.substr( start+1, start-end -1 );
++      return s2x<A>("");
+ 
+-    return s2x<A>(s);
++    return s2x<A>(s.substr( start+1, start-end -1 ));
+   }
+ } // namespace Leo
+ 

sysutils/xstow/files/patch-src__string_utils.h

@@ -0,0 +1,12 @@
+--- src/string_utils.h~	2013-06-01 23:10:50.000000000 +0300
++++ src/string_utils.h	2013-06-01 22:56:43.000000000 +0300
+@@ -28,6 +28,9 @@
+ #  define STRSTREAM
+ #endif  
+ 
++typedef std::vector<std::string> vec_string;
++std::ostream& operator<<( std::ostream& out, const vec_string &v );
++
+ std::string toupper( std::string s );
+ std::string strip( const std::string& str, const std::string& what = " \t\n\0" );
+ bool is_int( const std::string &s );