So far luacheck's rockspec specified only the git protocol. Hence people
behind firewalls/proxies, that block port 9814, had trouble fetching this
dependency via luarocks.

The latest commit updated the rockspec to use either git or https. Thus common
workarounds like this are not needed anymore:

    git config --global url."https://".insteadOf git://

References #3769.

Source: https://github.com/mpeterv/luacheck
Docs:   http://luacheck.readthedocs.org/en/0.12.0/index.html

Run via "make testlint".

Libuv and LuaJIT like to hide the actual compilation and linking
commands behind nice text.  This change makes them spit out the actual
command line to help us with debugging issues that people are seeing.

Busted now correctly excludes the 3.0 line of cliargs.

Unfortunately, it's not enough to avoid the rc file.  For now, let's
install a good version of lua_cliargs until the dependency is fixed
upstream.

jemalloc 4.0 adds support for OpenBSD, DragonFlyBSD and other platforms.

Release notes: https://github.com/jemalloc/jemalloc/releases/tag/4.0.0

4.0.1 and 4.0.2 are bugfix releases

Release notes: https://github.com/jemalloc/jemalloc/releases/tag/4.0.1
               https://github.com/jemalloc/jemalloc/releases/tag/4.0.2

Introduce ALLOW_EXISTING_SRC_DIR option, turned off by default.

The Homebrew formula, which downloads and extracts the third-party
dependency sources before starting the build, would turn this option
ON.