Merge pull request #5014 from parkera/parkera/amazonlinux2_include_fix

Add fcntl.h include, required for some linux platforms

Author: shahmishal

Sources/CoreFoundation/include/ForSwiftFoundationOnly.h

@@ -78,6 +78,7 @@
 #include <errno.h>
 #include <features.h>
 #include <termios.h>
+#include <fcntl.h>
 
 #ifdef __GLIBC_PREREQ
 #if __GLIBC_PREREQ(2, 28) == 0