Add remaining _l function stubs.

Bug: http://b/65595804
Test: ran tests
Change-Id: I3bea3af20b354d1f0d3e05fd35421a9045f29020
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index 1188a85..c2c75c0 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1425,8 +1425,14 @@
     sigtimedwait64;
     sigwait64;
     sigwaitinfo64;
+    strptime_l;
     swab;
     syncfs;
+    wcsftime_l;
+    wcstod_l;
+    wcstof_l;
+    wcstol_l;
+    wcstoul_l;
 } LIBC_O;
 
 LIBC_PRIVATE {