ghostscript-9.10, with ps2pdf support of hyperlinks broken in 9.14

Using gs-9.14, ps2pdf on PS files with hyperlinks (e.g., produced via latex->dvips, using the hyperref package) will not correctly implement the links (they will appear as links but not function).  This is a regression from working behavior in 9.10 (the version currently optionally installed by MacTeX-2014).  See the gs bugzilla:  http://bugs.ghostscript.com/show_bug.cgi?id=695413.

This commit simply copies the previous brew formula for gs-9.10 to provide a quick, temporary fix for this regression via the versions tap.