linux 386 support; now in same state as darwin 386
(stuck on 8l bug).

R=r
DELTA=349  (342 added, 1 deleted, 6 changed)
OCL=29882
CL=29886
diff --git a/src/lib/syscall/PORT b/src/lib/syscall/PORT
index 2f0fe14..f3addcd 100755
--- a/src/lib/syscall/PORT
+++ b/src/lib/syscall/PORT
@@ -99,6 +99,10 @@
 	mktypes="godefs -gsyscall -f-m64"
 	mkerrors="mkerrors"
 	;;
+linux_386)
+	mksysnum="mksysnum_linux /usr/include/asm/unistd_32.h"
+	mktypes="godefs -gsyscall -f-m32"
+	;;
 linux_amd64)
 	mksysnum="mksysnum_linux /usr/include/asm/unistd_64.h"
 	mktypes="godefs -gsyscall -f-m64"