doc: Fix require.extensions documentation

1. The stability index must come first, or it messes up the markdown
2. require.extensions is an Object, not an Array.

Close #5387
Revert "deps: downgrade openssl to v1.0.0f"

After much investigation it turns out that the affected servers are
buggy.  user-service.condenastdigital.com:443 in particular seems to
reject large TLS handshake records. Cutting down the number of
advertised ciphers or disabling SNI fixes the issue.

Similarly, passing { secureOptions: constants.SSL_OP_NO_TLSv1_2 }
seems to fix most connection issues with IIS servers.

Having to work around buggy servers is annoying for our users but not
a reason to downgrade OpenSSL. Therefore, revert it.

This reverts commit 4fdb8acdaef4c3cb1d855e992ada0e63fee520a6.
debugger: breakpoints in scripts not loaded yet

When developer calls setBreakpoint with an unknown script name,
we convert the script name into regular expression matching all
paths ending with given name (name can be a relative path too).

To create such breakpoint in V8, we use type `scriptRegEx`
instead of `scriptId` for `setbreakpoint` request.

To restore such breakpoint, we save the original script name
send by the user. We use this original name to set (restore)
breakpoint in the new child process.

This is a back-port of commit 5db936d from the master branch.
doc: link joyent logo in website footer
doc: document return values of EventEmitter methods
Merge remote-tracking branch 'origin/v0.10'
event: make setMaxListeners() return this

setMaxListeners was the only EventEmitter method that returned
undefined, so could not be chained.
test: EventEmitter#setMaxListeners() returns this

Add a regression test for commit f8d8122.