Gov. Arnold Schwarzenegger on Friday sided with drug companies and energy producers on three initiatives on the Nov. 8 ballot, and formally backed another requiring parental notification on abortions for minors. Of the two competing measures on the Nov. 8 ballot regarding prescription drugs, the Republican governor backed Proposition 78, which is supported by the pharmaceutical industry. It would seek voluntary cooperation from drug companies to participate in a state plan discounting drugs for the poor. A short release from his campaign office said he opposes a rival discount measure, Proposition 79, which is backed by health and consumer advocates....