Merge pull request #48 from rudigens/rtc

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Merge pull request #49 from asfadmin/devel

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Merge pull request #50 from rudigens/master

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Merge pull request #51 from asfadmin/devel

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Merge pull request #52 from rudigens/master

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Updates to write_hdf5_xml.
Merge pull request #53 from rudigens/rtc

Latest changes to write_hdf5_xml
Merge pull request #253 from rudigens/master

Latest changes to write_hdf5_xml