Eliminate MixedCaps symbol from public JTAG TAP API:

- Purely mechanical transformations to the source files.
- Rename 'jtag_all_taps' as '__jtag_all_taps.'
- Frees original symbol name to rename the accessor function.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2061 b42882b7-edfa-0310-969c-e2dbd0fdcd60