Merge branch 'master' into next
* master:
Makefile: install 'git' in execdir
git-svn.txt: fix description of fetch flags accepted by clone.
git-svn.txt: fix fetch flags incorrectly documented as init flags.
git-svn.txt: make formatting more consistent.
git-svn.txt: stop using dash-form of commands.
Documentation: update description of shell aliases
MinGW: truncate exit()'s argument to lowest 8 bits
gitweb: add empty alt text to avatar img
gitweb: picon avatar provider
gitweb: gravatar url cache
gitweb: (gr)avatar support
gitweb: use git_print_authorship_rows in 'tag' view too
gitweb: uniform author info for commit and commitdiff
gitweb: refactor author name insertion
http.c: add http.sslCertPasswordProtected option
http.c: prompt for SSL client certificate password