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.
* buildsym.c (end_symtab_1): Split it to ...
(end_symtab_get_static_block): ... this ...
(end_symtab_from_static_block): ... and this function.
(end_symtab, end_expandable_symtab): Call them.
* buildsym.h (end_symtab_get_static_block)
(end_symtab_from_static_block): New declarations.
* dwarf2read.c (process_full_comp_unit): New variable static_block.
Set its valid CU ranges.
gdb/testsuite/
* gdb.dwarf2/dw2-minsym-in-cu.S: New file.
* gdb.dwarf2/dw2-minsym-in-cu.exp: New file.
