[1.0] Configurable first page number (w/ patch)
Purpose: To allow the user to set the initial page number of a score
Applications: Large scores can be broken in more manageable smaller files or composite scores with different settings can be made of several files, while keeping the page sequence.
Notes: Initial page number is set through an additional item in Page Settings dlg box, stored in the PageFormat and written/read to/from the .msc? file.
A patch is attached; most of the code comes from the trunk; extensively tested with branch.