uclibc: put ARM thumb patches from 0.9.27 into 0.9.28

uclibc: put ARM thumb patches from 0.9.27 into 0.9.28
Some of the thumb patches had already been pushed into the uclibc release,
this commit adds corrected/updated versions of most of the ones which had
not been accepted.  The controversial 'change the ldso symbol resolver'
patch is not in this set - it will be re-worked to match the changes being
made in binutils for the same problem.