no hardcoded pathes for libabc.so

[olerichter]

switch build script includes for libabc.so to the customary linker autodiscovery from a hardcoded path

Description of change

removes the hardcoded path form the build commands in make

Purpose of this change

enable robust so finding for runtime linkers

How has this been tested?

build on RHEL7 and 9 and run act test suite on debian, ubuntu, RHEL derivates, Fedora, Arch and Suse

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• The actflow repository builds with the changes, and test cases pass.

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@rmanohar his uses the search path for finding the so, otherwise the path gets backed into the binary making my build process fails.

It uses -l:libabc.so and not -labc to explicitly link the so and not the static variant

requires: asyncvlsi/act#57

[olerichter]

It compiles fine on linux, but i dont have a mac to test macos (reqested from my it department)