stripping things out of cable_common

[penguian]

keyword_keepgit owner:jxs599@nci.org.au type_code improvement | by srb001@csiro.au

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cable_common.F90 has become the junk file where we put anything we wish to spread globally:
casa_ncdf.F90
user options and some other switches stripped out of cable_common
some of the IO routines relegated to casa_ncdf
This new file needs to be reviewed. Initially they were ncdf related functions
but it grew to encompass more that should not be in here

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Issue migrated from trac:270 at 2023-11-27 11:34:48 +1100

[penguian]

@jxs599@nci.org.au changed title from sripping things out of cable_common to stripping things out of cable_common

[penguian]

@ccc561@nci.org.au set keywords to keepgit