Merge branch 'milek-dev' into gfx-work

utilities.h

@@ -31,6 +31,7 @@ http://mozilla.org/MPL/2.0/.
 #define szModelPath "models/"
 #define szDynamicPath "dynamic/"
 #define szSoundPath "sounds/"
+#define szDataPath "data/"
 
 #define MAKE_ID4(a,b,c,d) (((std::uint32_t)(d)<<24)|((std::uint32_t)(c)<<16)|((std::uint32_t)(b)<<8)|(std::uint32_t)(a))
 
@@ -189,6 +190,10 @@ std::time_t last_modified( std::string const &Filename );
 bool
 erase_extension( std::string &Filename );
 
+// potentially erase leading slashes from provided file path
+void
+erase_leading_slashes( std::string &Filename );
+
 // potentially replaces backward slashes in provided file path with unix-compatible forward slashes
 void
 replace_slashes( std::string &Filename );