casa-mp-base

Fix build on macOS High Sierra and later

https://github.com/FreeRDP/FreeRDP/issues/4160

https://github.com/FreeRDP/FreeRDP/commit/6309459839e49129487a38d7c6aa16c2991f57ea

--- config.h.in.orig    2017-07-27 07:04:21.000000000 -0500

+++ config.h.in 2017-10-02 18:50:40.000000000 -0500

@@ -13,7 +13,11 @@

 /* Include files */

 #cmakedefine HAVE_FCNTL_H

+#if defined(__APPLE__) && !defined(__IOS__)

+#cmakedefine01 HAVE_UNISTD_H

+#else

 #cmakedefine HAVE_UNISTD_H

+#endif

 #cmakedefine HAVE_STDINT_H

 #cmakedefine HAVE_INTTYPES_H

 #cmakedefine HAVE_SYS_MODEM_H