Incorporate bsdmake into buildsystem and reorganize libs

lib/libsys/env_panic.c

@@ -0,0 +1,19 @@
+#include "sysutil.h"
+#include <string.h>
+
+/*=========================================================================*
+ *				env_panic				   *
+ *=========================================================================*/
+PUBLIC void env_panic(key)
+char *key;		/* environment variable whose value is bogus */
+{
+  static char value[EP_BUF_SIZE] = "<unknown>";
+  int s;
+  if ((s=env_get_param(key, value, sizeof(value))) == 0) {
+  	if (s != ESRCH)		/* only error allowed */
+  	printf("WARNING: env_get_param() failed in env_panic(): %d\n", s);
+  }
+  printf("Bad environment setting: '%s = %s'\n", key, value);
+  panic("","", NO_NUM);
+}
+