Bug fixes for version 6_0_00

1) Incorrect signed to unsigned conversion in some cases.

Updates for version 6_0_00

1) control of warnings based on compiler directives (`finwarningon `finwarningoff)

2) support for `undefall

3) increased maximum number of function arguments

4) Performance improvements

5) New compiler directives `finRemSpecifyOn and `finRemSpecifyOff to

remove unwanted specify blocks

6.0.00

5.0.24

5.0.23

5.0.22

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5.0.02