Anomalous Small-Angle X-ray Scattering Studies of Phase Separation in Bulk Amorphous Zr<SUB><B>52.5</B></SUB>Ti<SUB><B>5</B></SUB>Cu<SUB><B>17.9</B></SUB>Ni<SUB><B>14.6</B></SUB>Al<SUB><B>10</B></SUB>