code: calloc argument sequence
feature: gcc attribute, check all zlog's printf format to arguments
feature: support # comment in same line with conf
bugfix: 1M*5 in rule not parse correctly
doc: 1.2.8 version. As github throw download page, renew links
doc: revise my poor English manual.It is done by a guy who want to be anonymous. Thanks for him!
bugfix: when multiple processes write to one static file with rotation, not the newest file but archive files will be appended.
smooth: accurate time cost after the last bugfix
Merge with latest git://github.com/HardySimpson/zlog