lsyncd: use MACOS_FULL_VERSION
lsyncd: use MACOS_FULL_VERSION

This commit partial reverts beed39e46fa021dd1c133c2c8eaaa81b524e68c7.

For users whose local brew is at around 2015-06-02 to 2015-06-11,
running `brew update` will emit following error:

  Error: undefined method 'full_version' for OS::Mac:Module

This is caused by the same bug described in Homebrew/homebrew#42553.

Let's use `MACOS_FULL_VERSION` for now to restore `brew update` compatibility
for these users.

TODO: revert this commit after core code and formulae separation.

vitorgalvao/brew,Linuxbrew/brew,palxex/brew,EricFromCanada/brew,mahori/brew,konqui/brew,vitorgalvao/brew,toonetown/homebrew,maxim-belkin/brew,sjackman/homebrew,EricFromCanada/brew,claui/brew,nandub/brew,claui/brew,mgrimes/brew,JCount/brew,mahori/brew,JCount/brew,ilovezfs/brew,AnastasiaSulyagina/brew,mistydemeo/homebrew,mahori/brew,aw1621107/brew,staticfloat/brew,alyssais/brew,rwhogg/brew,nandub/brew,muellermartin/dist,Homebrew/brew,vitorgalvao/brew,tonyg/homebrew,amar-laksh/brew_sudo,sjackman/homebrew,hanxue/linuxbrew,alyssais/brew,gregory-nisbet/brew,konqui/brew,Linuxbrew/brew,pseudocody/brew,hanxue/linuxbrew,DomT4/brew,hanxue/linuxbrew,gordonmcshane/homebrew,reitermarkus/brew,reitermarkus/brew,DomT4/brew,toonetown/homebrew,pseudocody/brew,pseudocody/brew,mistydemeo/homebrew,sjackman/homebrew,palxex/brew,gregory-nisbet/brew,rwhogg/brew,Linuxbrew/brew,tonyg/homebrew,zmwangx/brew,maxim-belkin/brew,zmwangx/brew,jmsundar/brew,AnastasiaSulyagina/brew,Homebrew/brew,maxim-belkin/brew,ilovezfs/brew,JCount/brew,sjackman/homebrew,tonyg/homebrew,claui/brew,MikeMcQuaid/brew,reelsense/brew,nandub/brew,reelsense/brew,Homebrew/brew,zmwangx/brew,EricFromCanada/brew,toonetown/homebrew,muellermartin/dist,jmsundar/brew,nandub/brew,aw1621107/brew,MikeMcQuaid/brew,alyssais/brew,vitorgalvao/brew,DomT4/brew,konqui/brew,reitermarkus/brew,MikeMcQuaid/brew,muellermartin/dist,mahori/brew,bfontaine/brew,DomT4/brew,Linuxbrew/brew,amar-laksh/brew_sudo,reitermarkus/brew,Homebrew/brew,reelsense/brew,palxex/brew,mgrimes/brew,AnastasiaSulyagina/brew,ilovezfs/brew,EricFromCanada/brew,staticfloat/brew,MikeMcQuaid/brew,gordonmcshane/homebrew,amar-laksh/brew_sudo,bfontaine/brew,gregory-nisbet/brew,staticfloat/brew,jmsundar/brew,claui/brew,bfontaine/brew,mgrimes/brew,aw1621107/brew,mistydemeo/homebrew,konqui/brew,JCount/brew,gordonmcshane/homebrew,rwhogg/brew