fix some stray untyped global variables

[nsajko]

No description provided.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (6f5e5bb) 76.59% compared to head (0974edf) 76.59%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #523   +/-   ##
=======================================
  Coverage   76.59%   76.59%           
=======================================
  Files          35       35           
  Lines        3739     3739           
=======================================
  Hits         2864     2864           
  Misses        875      875           

Files Changed	Coverage Δ
src/common.jl	80.10% <ø> (ø)
...polynomials/standard-basis/immutable-polynomial.jl	97.67% <ø> (ø)

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[jverzani]

Thanks!! (How did you identify these?)

[nsajko]

You're welcome! Found these using varinfo, which can list all global names, and then checked which names were variable by trying to assign (e.g., Polynomials.ImmutablePolynomial = 3). The reason I did this in the first place was because ImmutablePolynomial being untyped was causing type inference issues in my code.