More path fixes, making ANDROID_HOME prereq
More path fixes, making ANDROID_HOME prereq

solomonronald/SalesforceMobileSDK-Android,kchitalia/SalesforceMobileSDK-Android,solomonronald/SalesforceMobileSDK-Android,huminzhi/SalesforceMobileSDK-Android,kchitalia/SalesforceMobileSDK-Android,huminzhi/SalesforceMobileSDK-Android,kchitalia/SalesforceMobileSDK-Android,huminzhi/SalesforceMobileSDK-Android,solomonronald/SalesforceMobileSDK-Android