Remove string.h from base.h.
Including string.h in base.h causes any file that includes a BoringSSL
header to include string.h. Generally this wouldn't be a problem,
although string.h might slow down the compile if it wasn't otherwise
needed. However, it also causes problems for ipsec-tools in Android
because OpenSSL didn't have this behaviour.
This change removes string.h from base.h and, instead, adds it to each
.c file that requires it.
Reviewed-by: David Benjamin <firstname.lastname@example.org>
Reviewed-by: Adam Langley <email@example.com>
diff --git a/crypto/asn1/tasn_new.c b/crypto/asn1/tasn_new.c
index 8a2b27d..b68eed7 100644
@@ -56,6 +56,8 @@