New Guava
Fix hex for string and bigint, support binary.
Tweak bigint test case
merge nathanlws: Fix HEX and add BINARY input support

Merge pull request #1048 from nathanlws/sql-layer/hex-for-binary
https://github.com/FoundationDB/sql-layer/pull/1048
String truncation: try to avoid scanning if obviously in range.
Column.maxCharacterWidth.