Merge https://github.com/macduff/quantmod

Initial commit

- commit Radek Maciaszek's patch to addOBV

o add_RSI now uses a new arg wilder=TRUE, to properly manage

- refactor getSplits to be more consistent with getDividends

o loadSymbols now has auto.assign=getOption("loadSymbols.auto.assign",TRUE),

o reverting back replot.R code... so much for 'no damage done!'

o getSymbols warning change. Also including explicit getOption()

o added env=NULL ability to all other get* functions (same behavior as auto.assign=FALSE)

o more changes surrounding getSymbols and 'env'

o removed all fixed 'env' defaults to use parent.frame instead

o TA.R returned to previous state for legend() definitions within chartTA and chartSetUp

TA.R updates to fix CRAN check warnings. chartSetUp is now deprecated, and users are directed to use layout() and chart_Series

o changed how chob objects are handled internally - they are now within an environment in the quantmod namespace, a convenient workaround for the unlock/lockBinding issues of R CMD check, and cleaner code to boot!

- fixed partial argument matching notes from R CMD check