Fix two problems with openocd.texi:

- Fix minor issues with xrefs not liking parentheses around them.
- Change 'Building' section to 'Building OpenOCD'.  It reads better.


git-svn-id: svn://svn.berlios.de/openocd/trunk@1902 b42882b7-edfa-0310-969c-e2dbd0fdcd60