Simplified code of GOPipeConfig and GOPipeConfigNode

[oleg68]

This PR:

• Reorders the members and methods of GOPipeConfig and GOPipeConfigNode
• Introduces template methods SetSmallMember and SetLargeMember
• Implements all setters with the new template methods

It is just refactoring. No GO behavior should be changed.

[oleg68]

Personally I'm not that fond of macro usage for function like content (GOPipeConfig.h line 54 and forward) but it seems to work. Is there any definite advantage over writing out the full function content?

There are two functions with the same code but with different passing of parameters. Using a macro allows to write the code only once.

[larspalo]

Using a macro allows to writhe the code only once.

Yes, I understand how preprocessor directives works by substituting the text. What I asked was if there was any real advantage (beyond not having to write out the body of the function with copy/paste) of using it? In this case, luckily, the macro is found just above the usage of it, which makes it somewhat easier to see/read/understand...

[oleg68]

beyond not having to write out the body of the function with copy/paste

I always try to avoid the copying/pasting a code because otherwise it would make difficult to support it. For example, If I decided to add something in the code, I would be obligate not to forget to do the same in several places.

The main purpuse of this PR is to remove a lot of repeated code from GOPipeConfig. So I evited to make copy/paste in the new functions.

[oleg68]

@rousseldenis could you approve this PR?