Move (almost all) electrical net commons to "power.h".

Compile and run on OS X O.K.
Add one more common to power.h
Merge branch 'power_h' into el-net1

* power_h:
  Move (almost all) electrical net commons to "power.h".

Conflicts:
	src/esrupfs/powoc_calc.F
	resolved by "using theirs"!
Fix inexplicable blank in file which breaks compile.
Fix inexplicable blank which breaks compile. Correct string length of electrical network file name to 144 chars.

Commit and push prior to re-running tester.pl for branch power_h - the illicit blank must have been added prior to final commit/push, formerly.
Due to length change of file name, several places were found in the code where ENTFLNAM was defined as 72 char independently of power.h. Commit an push prior to tester.pl run.
Backtrack on length of electrical network file name.

Commit and push prior to tester.pl run.
Adress a few forcheck warnings.
… poking in the dark ...
Initial tester.pl run with a few electrical net models now run O.K. Commit and push prior to next "big" tester.pl run.
Merge branch 'power_h' into el-net1

* power_h:
  Initial tester.pl run with a few electrical net models now run O.K. Commit and push prior to next "big" tester.pl run.
  … poking in the dark ...
  Adress a few forcheck warnings.
  Backtrack on length of electrical network file name.
  Due to length change of file name, several places were found in the code where ENTFLNAM was defined as 72 char independently of power.h. Commit an push prior to tester.pl run.
  Fix inexplicable blank which breaks compile. Correct string length of electrical network file name to 144 chars.