Change script headers from shell(#!/bin/sh) to bash(#!/bin/bash)

Some minor modification/refactored in work flow for createPatches.sh and runJtregTest.sh 

Detail description on changes in script files  
1.) runJtregTest.sh
	a.) Package names defined in script were not in sync with Makefile package defination. 
	b.) function packageNameExists was not able to access input parameter.
  
2.) createPatches.sh
	a.) added instruction for usage of script.
	b.) checking if the script is placed in currect directory.
	c.)  removed, iterating for loop for geting "<JavaFileName>.java"  and replaced the functionality by use of spliting string into an array and accessing last index for "<JavaFileName>.java".
removed whitespace and indented code.
removed whitespace
Merge pull request #13 from stkaushal/master

Build Scripts