Convert files gdb.base/[efg]*.exp to use standard_output_file et al. * ena-dis-br.exp, enum_cond.exp, enumval.exp, environ.exp, eu-strip-infcall.exp, eval-skip.exp, exe-lock.exp, expand-psymtabs.exp, exprs.exp, fileio.exp, find.exp, fixsection.exp, foll-exec.exp, foll-fork.exp, fortran-sym-case.exp, frame-args.exp, freebpcmd.exp, fullname.exp, funcargs.exp, gcore-buffer-overflow.exp, gcore.exp, gdb1090.exp, gdb11530.exp, gdb11531.exp, gdb1250.exp, gdb1555.exp, gdb1821.exp, gdbindex-stabs.exp, gdbvars.exp, gnu-ifunc.exp, gnu_vector.exp: Use standard_testfile, standard_output_file, prepare_for_testing, clean_restart.
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/enum_cond.c, gdb.base/enum_cond.exp: New testcase.
