Add missing Unit prefix to class Math_BigInteger_InternalTest.
Merge pull request #438 from bantu/BigInteger-InternalTest-ClassPrefix

Add missing Unit prefix to class Math_BigInteger_InternalTest.

* bantu/BigInteger-InternalTest-ClassPrefix:
  Add missing Unit prefix to class Math_BigInteger_InternalTest.
Merge branch 'master' into php5

* master:
  Add missing Unit prefix to class Math_BigInteger_InternalTest.