Add missing tabs to bsd.pypy.inst.mk

Submitted by:	Ruslan Makhmatkhanov <cvs-src@yandex.ru>
Many changes: limit python version to 2.7, don't check lib version.

Changes are:
 - remove redundancy from COMMENT (remove port name from short description)
 - limit python version to 2.x branch, because it not supposed to build
    with 3.x
 - remove shlib version from LIB_DEPENDS (should be safe, since we have
    not another libgc versions in the tree)
 - fix trailing whitespaces in PYPY_IGNORE_MEMORY message
 - use ${FILESDIR} instead of ${.CURDIR}/files/ in one safe place

Submitted by:	Ruslan Makhmatkhanov <cvs-src@yandex.ru>