arInit can now only modify the ar struct

Wrapping the main code of arInit in a function.

This fixes a bug when calling arInit in a loop (arInit no longer overwrites index "i" and other variuables).

arFramework3/arInit.m

@@ -13,6 +13,12 @@
 %
 % See also arLoadModel, arLoadData, arReset
 
+global ar
+arInitMain;
+
+
+function arInitMain()
+
 ar_path = fileparts(which('arInit.m'));
 if(exist('arCheck','file') == 0)
     addpath([ar_path '/Subfunctions'])
@@ -47,7 +53,6 @@
 
 ar.checksum = [];
 ar.info.ar_path = ar_path;
-clear ar_path;
 
 % check for updates on github
 arCheckVersion;
@@ -85,3 +90,5 @@
 ar.info = orderfields(ar.info);
 ar.config = orderfields(ar.config);
 ar.ppl = orderfields(ar.ppl);
+
+end