Canada-based mobile phone technology company BlackBerry Ltd. said that it’s aiming for $100 million of annualized net profit improvements, through a combination of cost reductions and margin expansion. This is in addition to $50 million of annualized cost saving actions disclosed in prior quarter. The Intelligent security software firm also said it will cut additional jobs in its cybersecurity business. The company continues to expect sequential improvements to operating cash flow usage in the current quarter and to be operating cash flow positive in the fourth quarter of the upcoming fiscal y…