Modify Homebrew formulas to use the new style dependencies

Should fix most of the audit errors caused by the new style dependencies merged in the Homebrew main repo:

```
sbesson:homebrew-alt sebastien$ brew update && git checkout origin/master 
Updated Homebrew from fa7127df to ba2fbca4.
==> Updated Formulae
appledoc	       dnscrypt-proxy	      git-hg		     keychain		    mupdf		   signing-party	  xvid
avian		       drizzle		      google-js-test	     liblo		    mysql-connector-odbc   squid		  youtube-dl
boost		       dsniff		      gradle		     libsvm		    node		   svtplay-dl
boost149	       dtach		      gtk+		     lilypond		    nu			   tabbed
cmake		       dterm		      herrie		     mecab		    phantomjs		   talloc
cmu-sphinxbase	       elixir		      hyperestraier	     mlton		    postgres-xc		   uwsgi
coq		       ghc		      jsonpp		     mongodb		    rhash		   vim
cvs2svn		       git		      jstalk		     mu			    shocco		   wxmac
HEAD is now at 5ef7332... Merge pull request #19 from joshmoore/scc-0.2.1
sbesson:homebrew-alt sebastien$ brew audit Formula/*.rb
berkeley-db45:
 * md5 is broken, deprecated: use sha1 instead
 * Use build instead of ARGV to check options
 * Use new-style option definitions

berkeley-db46:
 * md5 is broken, deprecated: use sha1 instead
 * Use build instead of ARGV to check options
 * Use new-style option definitions

omero:
 * Use ENV.fortran during install instead of depends_on 'gfortran'

omero43:
 * Use build instead of ARGV to check options
 * Use new-style option definitions

scc:
 * stable version 0.2.1 is redundant with version scanned from URL

Error: 10 problems in 5 formulae
sbesson:homebrew-alt sebastien$ git checkout sbesson/deps && brew audit Formula/*
Previous HEAD position was 5ef7332... Merge pull request #19 from joshmoore/scc-0.2.1
HEAD is now at 6cf432b... Modify Homebrew formulas to use the new style dependencies
omero:
 * Use ENV.fortran during install instead of depends_on 'gfortran'

Error: 1 problems in 1 formulae
```

1 audit error left due to `gfortran` dependency but this needs to be addressed in a separate PR as this is more generally related to the `numpy/scipy` installation.