Tools: bring OSX Qt SDK install back to 5.3.1

This was missed in the previous commit that reverted the
OSX tools.
Makefile: fix typo with extra quotation
Merge pull request #1346 from peabody124/osx_5.3.1_install

Tools: bring OSX Qt SDK install back to 5.3.1
Merge branch 'next' of github.com:TauLabs/TauLabs into next