log function should only emit once if _server object
Adding helpful error message when pack.register is missing a callback
Follow coding conventions concerning semicolons; Don't initialize variables explicity as "undefined"

This commit doesn't break anything. I added a bunch of semicolons in order to be more consistent regarding the style guide. Basically, JSHint passes now (except for one function being initialized inside a for-loop).
fix #1760
fix  Content-Type overriding issue  #1760
remove trailing whitespace
add standard for dealing with callbacks
Test for #1750
Merge pull request #1752 from wpreul/master

Adding helpful error message when pack.register is missing a callback
Fix unused file marshall. Closes #1407
Merge branch 'master' of github.com:spumko/hapi
Open single file stream. Closes #1771
Fix coverage for #1407
Retail etag on head. Closes #1772
Pass lookupCompressed in directory settings. Closes #1676
Adjust timeout tests
Windows view helpers path. Closes #1773
Merge pull request #1768 from danielb2/callback.returns

Style: callback to have explicit returns
Fix passthrough headers merge. Closes #1776
Merge branch 'master' of github.com:spumko/hapi