Rename memcpy, memmove, memset to prevent any confusion with the C equivalents.

Closes #4203.
Adds priv qualifiers where they have been commented out before implementation.

Updates #4386.
Make std::sync::semaphore() public
libstd: Fix std test. rs=busted
test: XFAIL issue_3882 due to strange Windows failure. rs=failure
allow logical negation operator (!) to be overloaded
test: add test for overloading logical negation operator
Comment out test_decode_form_urlencoded again. Filed issue 4449. rs=breakage
Add core::private::run_in_bare_thread

This begins executing Rust code in a fresh context with no runtime environment
Make ast_util::path_name_i take a slice vector, eliminate a bad copy
libstd: Ignore failing test on Windows
Long lines
libsyntax: Fix name generation in condition! macro
support clang 3.2
Merge pull request #4453 from crabtw/clang3.2

support clang 3.2
Merge pull request #4452 from apasel422/cond-macro-fix

libsyntax: Fix name generation in condition! macro
Merge pull request #4445 from apasel422/notop

Allow logical negation operator (!) to be overloaded
Merge pull request #4443 from wting/4386_add_privs

Adds priv qualifiers where they have been commented out before implementation.
Add William Ting to AUTHORS
Factor out base::get_discrim_val from const translation