Update classpath to remove obsolete apps and to fix compile error when importing to eclipse

Change-Id: I3c325b5027bfc7fc6542d2880bd60316781be372
Add vuforia-sdk (.gitignore blocked due to licensing issues)

Change-Id: I67442711bfc388a7cc08974c07a8e6ef6ad2d5b5
Add snapdragon_sdk 2.1 (.gitignore blocked due to licensing issues)

Change-Id: Iadc8b8d73396a394520e51a93bb0c602cfec7631
Add snapdragon_sdk 2.2 (.gitignore blocked due to licensing issues)

Change-Id: I95597f96887bbb4213e978fea8e152217ba7334a