adapt to the renames of the table classes in opm-parser

basically, "Opm::SimpleTable" becomes "Opm::SingleRecordTable".
Fixed error in testdata tests/CORNERPOPINT_ACTNUM.DATA
Merge pull request #585 from joakim-hove/testdata-error

Fixed error in testdata tests/CORNERPOPINT_ACTNUM.DATA
Merge pull request #584 from andlaus/adapt_to_opm-parser_renames

adapt to the renames of the table classes in opm-parser
Added missing line (parser conversion).
Use ENDNUM and prepare for IMBNUM.
Make use of keywords SATOPTS and EHYSTR.
Reset gwseg as the model for endpoint scaling.
ENDNUM: changed default value and jtab-logic

Default value changed from 'no scaling' to 'use table 1'.
Range of jtab changed to [-1,#tables-1].
Fix to make EQLNUM consistent with ACTNUM.

This should eventually be integrated in the parser.
Inserted some documentation.
Initialisation of EGLNUM (analogous to e.g SATNUM)
Proper interpretation of ENDNUM and IMBNUM fields.

Made consistent with grid discretization.
Removing a few bugs ...
Merge pull request #586 from osae/equil-update

EQLNUM in case of non-trivial ACTNUM
Merge pull request #573 from osae/test-eps

Endpoint scaling - taking advantage of the new parser.
Supress signed-unsigned comparison warning.
Merge pull request #589 from atgeirr/fix-comparison-warning

Supress signed-unsigned comparison warning.
Eclipse summary output: always convert the simulation time to days

this seems to have been forgotten in one place...
Merge pull request #592 from andlaus/convert_time_to_days_in_ecl_summary_output

Eclipse summary output: always convert the simulation time to days