Add getprogname/setprogname for BSD compatibility.

This is one less change we have to make when porting BSD code.

Bug: https://code.google.com/p/android/issues/detail?id=34898
Change-Id: If9b1a8d16996c7a19abcce8d3a456afc3e105a41
diff --git a/libc/Android.mk b/libc/Android.mk
index 852db73..d4ccefb 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -317,10 +317,12 @@
 
 libc_upstream_openbsd_src_files := \
     upstream-openbsd/lib/libc/gen/exec.c \
-    upstream-openbsd/lib/libc/gen/ftok.c \
     upstream-openbsd/lib/libc/gen/fnmatch.c \
-    upstream-openbsd/lib/libc/gen/toupper_.c \
+    upstream-openbsd/lib/libc/gen/ftok.c \
+    upstream-openbsd/lib/libc/gen/getprogname.c \
+    upstream-openbsd/lib/libc/gen/setprogname.c \
     upstream-openbsd/lib/libc/gen/tolower_.c \
+    upstream-openbsd/lib/libc/gen/toupper_.c \
     upstream-openbsd/lib/libc/string/strstr.c \
     upstream-openbsd/lib/libc/string/strsep.c \
     upstream-openbsd/lib/libc/string/wcslcpy.c \