Merge pull request #12 from bakercp/vs

major updates for VS build
chmod script modes back
cairo: generate dependency configure scripts when needed and make sure to run dependency make install before building, fixes #13
fixed bad poco release version, fixes #15; a few typos
Merge branch 'master' of github.com:danomatika/apothecary
prebuild is now a full prepare action, run before building; added prepare to all formulas to avoid shadowing between formulas; udpated readme & formula template
moved cairo dependencies into _depends formula folder, added DEPENDS_FORMULA_DIR & DEPENDS_BUILD_DIR path variables
Merge branch 'master' of github.com:danomatika/apothecary
dependency handling updated with  array &  automagic goodness, dependencies can be built by name, added a depends build target, dependencies can now be formula folders, main OF lib formulas can now be dependencies; updated readme
Merge branch 'master' of github.com:danomatika/apothecary