syslog support; bitwise logior and logand functions become variadic.

* Makefile: Use -iquote to restrict our #include search paths from being
processed for #include <...>.  Add syslog.o to OBJS-y if have_syslog is y.

* configure (have_syslog): New variable, set by detecting syslog API.

* eval.c (eval_init): logand and logior registrations changed to
go to variadic versions. New syslog variables and functions registered.

* lib.c (logandv, logiorv): New functions.

* lib.h (logandv, logiorv): Declared.

* txr.c (main): Call syslog_init.

* syslog.c: New file.

* syslog.h: New file.

1 files changed, 4 insertions, 0 deletions

diff --git a/txr.c b/txr.c
index d614a5de..fd96d9a8 100644
--- a/txr.c
+++ b/txr.c
@@ -41,6 +41,7 @@
 #include "match.h"
 #include "utf8.h"
 #include "debug.h"
+#include "syslog.h"
 #include "txr.h"
 
 const wchli_t *version = wli("71");
@@ -162,6 +163,9 @@ int main(int argc, char **argv)
   match_init();
   parse_init();
   debug_init();
+#if HAVE_SYSLOG
+  syslog_init();
+#endif
   return txr_main(argc, argv);
 }