lang/pypy: unbreak build on i386 and armv6

• Add back PYPY_BITS as it is required to define the names of two files, depending if pypy is translated for 32 or 64 bit systems [1].
• Change maintainership to python@ [2][3][4]

Reported by: pkg-fallout [1]
Approved by: koobs@ [2]
PR: 204743 [3]
Submitted by: robak@ [4]