Extend Travis's depth a bit

Instead of depth=1, try depth=5. This way, if something gets landed
before travis had a chance to build, it'll still get tested, at least
post-facto.

This is the root cause of the build failure at

https://travis-ci.org/rapid7/metasploit-framework/builds/11436293

That commit is not available because the HEAD pointer moved past it with
the next commit; IOW, we landed too quick for Travis to rspec each
change, which is generating failed build messages.

If there was really a failure in there, it'd be a pain now to determine
which commit actually broke the build.
Add x86 to meterpreter's binary suffix

This makes x86 more consistent with x64.

Also replaces a bunch of instances of:
  File.join(Msf::Config.install_root, 'data', ...)
with the simpler
  File.join(Msf::Config.data_directory, ...)

[See rapid7/meterpreter#19]
Land #2378, meterpreter DLL suffix

Tested in the following configurations:

* WinXP SP0 x86 - reverse_http, reverse_tcp, ms08-067, ms03-026
* Win7 x64 fully patched - reverse_https, reverse_tcp, x64/reverse_tcp

Tested with all public extensions. Behaviour matches that of the currently released MSF.

x64 binaries no longer show up in auto-complete for x86.
Remove Id tags in scripts/
Remove more $Revision tags
Merge branch 'rapid7' into cleanup/remove-id-tags

Conflicts:
	lib/msf/core/payload/osx/bundleinject.rb
	lib/msf/core/payload/windows/dllinject.rb
	lib/msf/core/payload/windows/exec.rb
	lib/msf/core/payload/windows/loadlibrary.rb
	lib/msf/core/payload/windows/reflectivedllinject.rb
	lib/msf/core/payload/windows/x64/reflectivedllinject.rb
	scripts/meterpreter/netenum.rb
Land #2384 - remove id and revision tags
Land #2375 - incrase depth for travis