Not actually much of a change, but consistency.

Change-Id: If2ef7a8b698a229f5c494822d870767e1a61476e
Reviewed-on: https://boringssl-review.googlesource.com/4127
Reviewed-by: Adam Langley <agl@google.com>

find -name CMakeLists.txt -type f | xargs sed -e 's/\t/  /g' -i

Change-Id: I01636b1849c00ba918f48828252492d99b0403ac

Another signedness error. Leave a TODO to possibly resolve EVP_DecodeBlock's
ignoring padding. Document some of the Init/Update/Finish versions' behavior.

Change-Id: I78a72c3163f8543172a7008b2d09fb10e003d957
Reviewed-on: https://boringssl-review.googlesource.com/1230
Reviewed-by: Adam Langley <agl@google.com>

Initial fork from f2d678e6e8 (1.0.2 beta).

(This change contains substantial changes from the original and
effectively starts a new history.)