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Changes cosh, exp, expm1, log, log10, sinh, cbrt,
asin, acos, atan, tanh, log1p
These functions are now implemnted in java to
save the overhead of a jni call

Change-Id: I4d3b70dd1693378af5b04cbbe0fecd95d97c1cff

Code has moved to separate projects, each with their
own NOTICE file.

(cherry picked from commit 867586be)

Change-Id: I0fa897b60c5eee02b5ad51c060d4d6bdd9b1f1cb

(cherry picked from commit 1ad58032)

Change-Id: I6c9a3059fd39b3695f1d4737e977bda9e8411a4c

The code previously moved to external/bouncycastle

Change-Id: I3ffe2b1b08819f25d2c370c08c6303cf54764db5

Change-Id: Ie4426f8e33ddef42916e88adeaf672714212d3a3

Our implementations of SimpleTimeZone and Calendar became mutually recursive
for custom time zones when I changed GregorianCalendar.computeFields to use
TimeZone.inDaylightTime --- SimpleTimeZone's implementation of inDaylightTime
creates a GregorianCalendar leading to a stack overflow looking something
like this...

	at java.util.SimpleTimeZone.inDaylightTime(SimpleTimeZone.java:599)
	at java.util.GregorianCalendar.computeFields(GregorianCalendar.java:595)
	at java.util.Calendar.complete(Calendar.java:819)
	at java.util.Calendar.setTimeInMillis(Calendar.java:1319)
	at java.util.GregorianCalendar.<init>(GregorianCalendar.java:339)
	at java.util.GregorianCalendar.<init>(GregorianCalendar.java:325)
	at java.util.SimpleTimeZone.inDaylightTime(SimpleTimeZone.java:599)

I've cut the knot by introducing "Grego" from ICU4J, and rewriting our
SimpleTimeZone.inDaylightTime in the style of ICU4J's implementation.

Maybe we'll be using the ICU4J calendar implementation sooner than I thought!