This fixes the non-memory corruption error in #2.
With this, partcl builds on OS X 10.7. It does, however, fail an astonishing number of tests.
pmc_type now called Parrot_pmc_get_type_str
pmc_type was an old compatability macro removed in Nov 2011 by
dffbd93: Remove very old 'compatibilty macros'. The new way to say
that is Parrot_pmc_get_type_str. Longer, but it matches Parrot's
Load tcl_group dynpmcs