Add coverity-scan script
Tweak travis secure config
Add coverity scan badge to readme
Only run coverity on development
Refine build limitation
Merge pull request #2044 from libgit2/coverity

Run Coverity scan on Travis
Fix some documentation issues.
Revert a wrong doc change.
Merge pull request #2055 from arthurschreiber/patch-3

Fix some documentation issues.
Fix local push to file:// URL.
Add test for pushing to a local file:// URL.
Convert gitdir paths to posix on Windows

Apparently, a .git file with "gitdir: path" link on Windows is
allowed to use backslashes in the path.  Who knew?
Fix a compile warning.
Merge pull request #2058 from libgit2/rb/gitdir-windows-paths

Convert gitdir paths to posix on Windows
Fix segfault when calling git_config_get_* functions when a config fails to load

Reinitialize the result code of get_entry() to GIT_ENOTFOUND
Merge pull request #2059 from linquize/git_config_get_crash

Fix segfault when calling git_config_get_* functions when a config fails to load
Factor out code to convert local "url" into a path.

Previously this code was shared between `local_push` and `local_connect`.
git_reflog_entry_message can be null
fix corner cases and an undefined behavior
add unit tests for git_buf_join corner cases