Update JTAG reset delay command handlers:

Update JTAG reset delay command handlers:
- Fixes for error handling:
  - Return a syntax error instead of calling exit(-1).
  - Return error when more than one argument is provided too.
- Remove useless braces and indent after the if/return statements.
- Wrap function arguments to fit in 80 columns.

git-svn-id: svn://svn.berlios.de/openocd/trunk@2111 b42882b7-edfa-0310-969c-e2dbd0fdcd60