Fix compilation errors caused by more files not added in previous commit

lib/other/initgroups.c

@@ -0,0 +1,34 @@
+/*
+initgroups.c
+*/
+#include <sys/param.h>
+#include <unistd.h>
+#include <string.h>
+#include <grp.h>
+
+
+int initgroups(const char *name, gid_t basegid)
+{
+  struct group *gr;
+  int r, found = 0, n = 0;
+  gid_t groups[NGROUPS];
+
+  if((r = setgid(basegid)) < 0)
+	return(r);
+
+  setgrent();
+  while ((gr = getgrent()) != NULL && (n + 1) <= NGROUPS) {
+	char **mem;
+	for(mem = gr->gr_mem; mem && *mem; mem++) {
+		if(!strcmp(name, *mem)) {
+			groups[n++] = gr->gr_gid;
+			break;
+		}
+	}
+  }
+
+  endgrent();
+
+  return setgroups(n, groups);
+}
+

lib/syscall/setgroups.s

@@ -0,0 +1,7 @@
+.sect .text
+.extern	__setgroups
+.define	_setgroups
+.align 2
+
+_setgroups:
+	jmp	__setgroups