File 0001-fix-win32-doc-install-path.patch of Package mingw64-gl2ps

--- a/CMakeLists.txt.orig	2019-05-08 11:18:47.857944345 +0200
+++ b/CMakeLists.txt	2019-05-08 11:19:35.845154997 +0200
@@ -154,11 +154,7 @@
                              ARCHIVE DESTINATION lib${LIB_SUFFIX})
 endif(OPENGL_FOUND)
 
-if(WIN32)
-  set(GL2PS_DOC .)
-else(WIN32)
-  set(GL2PS_DOC share/doc/gl2ps)
-endif(WIN32)
+set(GL2PS_DOC share/doc/gl2ps)
 
 install(FILES gl2ps.h DESTINATION include)
 install(FILES ${CMAKE_SOURCE_DIR}/README.txt DESTINATION ${GL2PS_DOC})