whitespace fixes
whitespace fixes

Match PEAR coding standards: convert tabs to 4 spaces, consistent
spacing around operators and conditionals. Whitespace only (diff -w
shows no changes)

openvoipco/a2billing,fureszpeter/a2billing,openvoipco/a2billing,fureszpeter/a2billing,fureszpeter/a2billing,renatofb/a2billing,openvoipco/a2billing,damienblom/a2billing,renatofb/a2billing,damienblom/a2billing,wcardona/a2billing,wcardona/a2billing,damienblom/a2billing,damienblom/a2billing,renatofb/a2billing,wcardona/a2billing,fureszpeter/a2billing,openvoipco/a2billing,openvoipco/a2billing,wcardona/a2billing,damienblom/a2billing,wcardona/a2billing,fureszpeter/a2billing,renatofb/a2billing,renatofb/a2billing