added note about #[macro_escape]
configure: cleanup - parsing supported target triples
hashmap: improve docstring
ops: add a docstring
base64: add docstring
auto merge of #5567 : jbclements/rust/release-note-macro-escape, r=thestinger
Fix cpu type normalization in configure script

This condition was added for cygwin support but appears to simply turn
off the normalization of CPU types
auto merge of #5594 : brson/rust/freebsd, r=brson

This condition was added for cygwin support but appears to simply turn
off the normalization of CPU types
auto merge of #5574 : thestinger/rust/docstring, r=sanxiyn
auto merge of #5576 : yichoi/rust/pull-0327, r=brson

minor fix
configure: cleanup - parsing supported target triples
derive Eq and Clone impls where applicable
auto merge of #5575 : apasel422/rust/simplify-impls, r=thestinger