and stabs.c)
- started implementing typedef support
- functions now have a real function signature (only in stabs.c, still
  to be done in msc.c)
- small enhancements to TI_GET_TYPE for functions
- added support for functions' block and local variables in registers
  (msc.c)
- fixed some bugs in StackWalk
- constants are now stored as variants (instead of unsigned ints)
- fixed regular expression management (dbghelp's RE are not the same
  as POSIX ones)