More OpenBSD cleanup (primarily string).

This patch removes the string/ and wchar/ directories.

Change-Id: Ia489904bc67047e4bc79acb1f3eec21aa3fe5f0d

libc/arch-x86_64/x86_64.mk

@@ -1,6 +1,7 @@
 # x86_64 specific configs
 
 libc_common_src_files_x86_64 := \
+    bionic/index.cpp \
     bionic/memchr.c \
     bionic/memcmp.c \
     bionic/memcpy.c \
@@ -9,18 +10,7 @@ libc_common_src_files_x86_64 := \
     bionic/memset.c \
     bionic/strchr.cpp \
     bionic/strnlen.c \
-    string/bcopy.c \
-    string/index.c \
-    string/strcat.c \
-    string/strcmp.c \
-    string/strcpy.c \
-    string/strlcat.c \
-    string/strlcpy.c \
-    string/strlen.c \
-    string/strncat.c \
-    string/strncmp.c \
-    string/strncpy.c \
-    string/strrchr.c \
+    bionic/strrchr.cpp \
     upstream-freebsd/lib/libc/string/wcscat.c \
     upstream-freebsd/lib/libc/string/wcschr.c \
     upstream-freebsd/lib/libc/string/wcscmp.c \
@@ -28,6 +18,16 @@ libc_common_src_files_x86_64 := \
     upstream-freebsd/lib/libc/string/wcslen.c \
     upstream-freebsd/lib/libc/string/wcsrchr.c \
     upstream-freebsd/lib/libc/string/wmemcmp.c \
+    upstream-openbsd/lib/libc/string/bcopy.c \
+    upstream-openbsd/lib/libc/string/strcat.c \
+    upstream-openbsd/lib/libc/string/strcmp.c \
+    upstream-openbsd/lib/libc/string/strcpy.c \
+    upstream-openbsd/lib/libc/string/strlcat.c \
+    upstream-openbsd/lib/libc/string/strlcpy.c \
+    upstream-openbsd/lib/libc/string/strlen.c \
+    upstream-openbsd/lib/libc/string/strncat.c \
+    upstream-openbsd/lib/libc/string/strncmp.c \
+    upstream-openbsd/lib/libc/string/strncpy.c \
 
 # Fortify implementations of libc functions.
 libc_common_src_files_x86_64 += \
@@ -51,8 +51,7 @@ libc_bionic_src_files_x86_64 := \
     arch-x86_64/bionic/sigsetjmp.S \
     arch-x86_64/bionic/syscall.S \
     arch-x86_64/bionic/vfork.S \
-    string/memcmp16.c \
-
+    bionic/__memcmp16.cpp \
 
 libc_crt_target_cflags_x86_64 += \
     -m64 \