This reverts commit b690cb67be9b487eb10156c03e2c00869e88cc9d, reversing
changes made to 50dd431dffe5cf86e9064a652d6b01dbbe542cf0. This is
necessary because the reverted changeset reduced coverage by an unknown
extent.
* Replace islamicc with islamic-umalqura
Per discussion in #743, it's implementation-dependent how ismalicc is
canonicalized. However, 'islamic-umalqura' should be treated the same
way by all implementations.
* Remove ar-ma-u-ca-islamic-umalqura per discussion