Use secure temporary filenames during build.

Audited by:	markm, cracauer

bin/sh/mkbuiltins

@@ -37,7 +37,7 @@
 #	@(#)mkbuiltins	8.2 (Berkeley) 5/4/95
 # $FreeBSD$
 
-temp=/tmp/ka$$
+temp=`/usr/bin/mktemp -t ka`
 havejobs=0
 if grep '^#define JOBS[	 ]*1' shell.h > /dev/null
 then	havejobs=1

bin/sh/mktokens

@@ -41,7 +41,8 @@
 # token marks the end of a list.  The third column is the name to print in
 # error messages.
 
-cat > /tmp/ka$$ <<\!
+temp=`/usr/bin/mktemp -t ka`
+cat > $temp <<\!
 TEOF	1	end of file
 TNL	0	newline
 TSEMI	0	";"
@@ -71,25 +72,25 @@ TCASE	0	"case"
 TESAC	1	"esac"
 TNOT	0	"!"
 !
-nl=`wc -l /tmp/ka$$`
+nl=`wc -l $temp`
 exec > token.h
-awk '{print "#define " $1 " " NR-1}' /tmp/ka$$
+awk '{print "#define " $1 " " NR-1}' $temp
 echo '
 /* Array indicating which tokens mark the end of a list */
 const char tokendlist[] = {'
-awk '{print "\t" $2 ","}' /tmp/ka$$
+awk '{print "\t" $2 ","}' $temp
 echo '};
 
 char *const tokname[] = {'
 sed -e 's/"/\\"/g' \
     -e 's/[^	 ]*[	 ][	 ]*[^	 ]*[	 ][	 ]*\(.*\)/	"\1",/' \
-    /tmp/ka$$
+    $temp
 echo '};
 '
-sed 's/"//g' /tmp/ka$$ | awk '
+sed 's/"//g' $temp | awk '
 /TIF/{print "#define KWDOFFSET " NR-1; print ""; print "char *const parsekwd[] = {"}
 /TIF/,/neverfound/{print "	\"" $3 "\","}'
 echo '	0
 };'
 
-rm /tmp/ka$$
+rm $temp