fix another memory leak
fix some XmString memory leaks in the colors dialog
replace tabs with spaces
rename MENU_COLS to menuCols
don't strip file name from spaces when opening a file with Ctrl+Y
enable xft render table for newer motif versions
I opened an issue there (https://github.com/thentenaar/motif/issues/50) and it is fixed now.
No, I haven't changed anything.