Provide inotify from glibc

Author: gmittert

stdlib/public/Platform/glibc.modulemap.gyb

@@ -407,6 +407,10 @@ module SwiftGlibc [system] {
         header "${GLIBC_ARCH_INCLUDE_PATH}/sys/shm.h"
         export *
       }
+      module inotify {
+        header "${GLIBC_ARCH_INCLUDE_PATH}/sys/inotify.h"
+        export *
+      }
 % end
       module statvfs {
         header "${GLIBC_ARCH_INCLUDE_PATH}/sys/statvfs.h"