file.c: move sync_file_range and sync_file_range2 parsers to a separate file

* sync_file_range.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* file.c: Move sys_sync_file_range, sys_sync_file_range2, and related
code to sync_file_range.c.
diff --git a/Makefile.am b/Makefile.am
index f4e7c77..d197ef4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -58,6 +58,7 @@
 	strace.c	\
 	stream.c	\
 	swapon.c	\
+	sync_file_range.c \
 	syscall.c	\
 	sysctl.c	\
 	sysinfo.c	\