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

gitportable/mingw64/lib/tcl8.6/tzdata/Africa/Nairobi

@@ -0,0 +1,10 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Nairobi) {
+    {-9223372036854775808 8836 0 LMT}
+    {-1946168836 9000 0 +0230}
+    {-1309746600 10800 0 EAT}
+    {-1261969200 9000 0 +0230}
+    {-1041388200 9900 0 +0245}
+    {-865305900 10800 0 EAT}
+}