main, res, tests: Fix compilation errors on FreeBSD.

asterisk.c, manager.c: Increase buffer sizes to avoid truncation warnings.
config.c: Include header file for WIFEXITED/WEXITSTATUS macros.
res_timing_kqueue: Use more portable format specifier.
test_crypto: Use non-linux limits.h header file.

Resolves: #916

main/config.c

@@ -44,6 +44,7 @@
 #include <libgen.h>
 #include <time.h>
 #include <sys/stat.h>
+#include <sys/wait.h>
 
 #include <math.h>	/* HUGE_VAL */
 #include <regex.h>