[LyX/2.1.x] Add some postscript and pdf viewers for Unix and Windows.

commit a8b7e0a18b38d67594836cb7295b6e2e21aa9c15 Author: Enrico Forestieri for...@lyx.org Date: Sun Aug 3 19:26:34 2014 +0200 Add some postscript and pdf viewers for Unix and Windows. For Windows: AcroRd32, SumatraPDF and gsview (both 32 and 64 bit versions). For Unix: qpdfview.

[LyX/2.1.x] Add some postscript and pdf viewers for Unix and Windows.

commit a8b7e0a18b38d67594836cb7295b6e2e21aa9c15 Author: Enrico Forestieri Date: Sun Aug 3 19:26:34 2014 +0200 Add some postscript and pdf viewers for Unix and Windows. For Windows: AcroRd32, SumatraPDF and gsview (both 32 and 64 bit versions). For Unix: