Mid-hack, does not compile

i.e., do not bother pulling.
2-byte type uniformly in Value instead of base mem[].  All Values know
their "type", and will silently auto-convert between a serialized
byte[], a POJO, and swap-to-disk.
Round 2 of type hacks
next big hack, touches all files

Mostly converting ValueArray.value() to DKV.get(key).get()
But plenty of other modest changes also
Zounds... it all runs

Just odds-n-ends to get all things in junit.py & test.py.
Minor fix of generic type for JDK6
Inspect of GLMGrid models

plus some whitespace cleanup
Merge branch 'master' into cliffc-types

Conflicts:
	src/test/java/hex/GLMTest.java
Update getting ValueArray for new test
GLM inspect response has changed, but was never parsed
Merge branch 'cliffc-types'