Correct top side bearing
Allow larger control points in charview and ability to select the bigger points
cleanup
Merge pull request #621 from monkeyiq/2013july/charviewcontrolpointsz

Allow the size of control points on glyphs to be set via preferences.
Merge pull request #620 from mandel59/fixvmtx

Correct a formula for top side bearing
Tidy up use of g_tree_new_full in featurefile.c: we don't need
donothing, as we can pass NULL, but on the other hand we do need to
wrap g_ascii_strcasecmp, as the comparison function is passed three
arguments, one of which we must ignore.
Use g_strchomp to simplify ReopenLastFonts.
Simplify last open fonts list saving.

Also, ensure that if the application is exited by closing the last
window rather than by File->Quit, then an empty list is saved, rather
than the entire list of fonts edited in that session, thus matching
user expectation by comparison with other apps.
Remove duplicate OpenType line from Open File filter list.
Fix a null pointer dereference.