Two modifications: 1. The addition of 2013 to the copyright year range for every file; 2. The use of a single year range, instead of potentially multiple year ranges, as approved by the FSF.
gdb/testsuite/ChangeLog: * gdb.base/print-file-var-lib1.c, gdb.base/print-file-var-lib2.c, gdb.base/print-file-var-main.c, gdb.base/print-file-var.exp: New files. gdb/ChangeLog: * config/djgpp/fnchange.lst: Add entries for print-file-var-lib1.c, print-file-var-lib2.c, print-file-var-main.c and print-file-var.exp (located in gdb/testsuite/gdb.base).