Fix incorrect error messages in the time library
Fix errors in how parsed time values were used

%u flag takes a value in the range of 1-7. However value needs to be
stored in tm.tm_wday between 0 and 6.
%y takes a two-digit year value. Subtracting 1900_i32 from it is not
needed.
Add range checking in the time library

This was requested in Issue #2350. New function match_digits_in_range
added and used instead of match_digits wherever needed.
Tidied up long lines
clean up tempfile module and rm FIXME

This removes the FIXME suggesting that mkdtemp should rely on the
default umask, because that would make it unusable for making a secure
work area in a world writable directory (have to assume that other users
have created files, directories, hard links, etc. in your directory).
The POSIX mkdtemp function creates a directory with 700 permissions to
avoid this problem.
Implement Ord trait for Timespec
repr: represent char values as char literals rather than integers.
add a Set trait and implement it for TreeSet
add a LinearSet type (implementing the Set trait)
Merge pull request #4551 from SimonSapin/char-repr

repr: represent char values as char literals rather than integers.
Add Simon Sapin to AUTHORS
Merge pull request #4554 from thestinger/set

add a Set trait
Revert "Fix options passed to gpg in cargo init"

As per https://github.com/mozilla/rust/pull/4253

This reverts commit 6c056976678e103f23fd29557174d7718b75a617.
fix long lines
convert ast::expr into a struct
convert ast::ty into a struct
convert ast::{ty_field_,ty_method} into a struct
convert the remaining ast record types into structs

These are: region,arg,fn_decl,method,_mod,foreign_mod,
variant_arg,enum_def_,variant_,trait_ref.
convert librustc record types to structs

specifically:

freevars::freevar_entry
ty::{field_ty,AutoAdjustment,AutoRef}
mod::{method_param,method_map_entry}
Convert many libsyntax records into structs

Specifically:

ast_map::ctx
ast_util::id_range
diagnostic::{handler_t,codemap_t}
auto_encode::field
ext::base::{macro_def,syntax_expander_tt,syntax_expander_tt_item}
ext::pipes::proto::next_state