fixes redmine #1561 by fixing and renabling tests in the PEcAn.utils package; only the logger functions in utils/inst/tests/test.logger.R don't seem to work, (I have updated the issue with more details)

Conflicts:

	utils/DESCRIPTION
fixes redmine #1561 by fixing and renabling tests in the PEcAn.utils package; only the logger functions in utils/inst/tests/test.logger.R don't seem to work, (I have updated the issue with more details)

Conflicts:

	utils/DESCRIPTION
moved approx.posterior function from PEcAn.utils to PEcAn.MA
removed utils/inst/tests/test.read.output.R; I am revising this in a separate branch
Merge branch 'master' of github.com:PecanProject/pecan
Merge branch 'master' of github.com:PecanProject/pecan
Merge branch 'master' of github.com:PecanProject/pecan
Merge branch 'master' of github.com:PecanProject/pecan
Merge branch 'master' of github.com:PecanProject/pecan
added example data to meta.analysis module
added example data to meta.analysis module
Merge branch 'master' of github.com:PecanProject/pecan

Conflicts:
	modules/meta.analysis/data/ma.testdata.RData
missing dependencies
model2netcdf does not exist
expect_output does not capture stderr
moved create.density.df functions from utils to priors, to remove the dependency of the priors package on utils
Merge branch 'master' of github.com:PecanProject/pecan
uncommented tests / removed obsolete tests from test.read.settings; re-added RMySQL dependency
added more informative message if database version is > PEcAn expects. refs redmine #1673
added default database settings so that check.settings will not fail if not specified