made the pack completely portable and wrote relevent bat files to go with it

gitportable/mingw64/lib/tcl8.6/msgs/en_in.msg

@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_IN AM "AM"
+    ::msgcat::mcset en_IN PM "PM"
+    ::msgcat::mcset en_IN DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset en_IN TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset en_IN DATE_TIME_FORMAT "%d %B %Y %H:%M:%S %z"
+}