+ added function free_linear_addr_mapping to unit go32



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25786 3ad0048d-3df7-0310-abae-a5850022a9f2
* go32.map_device_in_memory_block result checking made consistent with all the
  other functions in the go32 unit



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25787 3ad0048d-3df7-0310-abae-a5850022a9f2
  + added now that the iOS SDK files aren't under NDA anymore

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25788 3ad0048d-3df7-0310-abae-a5850022a9f2