Update linux to 7.6.0

[frmdstryr]

Description

Update binder/config to use occt 7.6.0 on linux.

Motivation and Context

For #94 , I don't have/use windows so someone else can fix that.

How Has This Been Tested?

DeclaraCAD with py3.8.

Screenshots (if appropriate):

[trelau]

btw..i'm working on a new (rewritten) version of the python binder (i.e., pyOCCT_binder). it's running locally on OCCT 7.6.0 on windows. will share the repo in coming days

[frmdstryr]

Good to hear.. any chance it'll work with smesh too?

[trelau]

@frmdstryr yes, in theory. the main motivation for redoing pybinder was to make it more robust and modular so it can (in theory) be applied to SMESH (as part of pySMESH project). at one point i had SMESH packaged into pyOCCT but it seems like those deserve to be separate things (tho it adds complexity in the binding tool). i could be convinced either way if you have an opinion on the matter.

[frmdstryr]

I was playing around and got pySMESH 9.7 to compile with pyOCCT 7.6 but it seems like SMESH can no longer import base classes from OCCT. It's just giving a "referenced unknown base type" at import time for anything that extends something from OCCT. It's odd because I had it working with smesh 9.6... Idk if I messed something up or what changed. This wouldn't be a problem if it were all one library... but I still think they should be separate.

Edit: Nevermind, it works fine, I just missed a few types...