Merge branch 'maint'

* maint: Documentation/git-clone: describe --mirror more verbosely do not depend on signed integer overflow work around buggy S_ISxxx(m) implementations xdiff: cast arguments for ctype functions to unsigned char init: plug tiny one-time memory leak diffcore-pickaxe.c: remove unnecessary curly braces t3020 (ls-files-error-unmatch): remove stray '1' from end of file setup: make sure git dir path is in a permanent buffer environment.c: remove unused variable git-svn: fix processing of decorated commit hashes git-svn: check_cherry_pick should exclude commits already in our history Documentation/git-svn: discourage "noMetadata"