Fix the following style bugs:
o #ifdef, #ifndef, and #undef should be followed by a space, not a
tab.
o The second level of indentation in prototypes is 4 characters even
when the function names are indented 1 extra character.
o Type qualifiers that appear next to a * need a seperating space so
that the qualifier isn't easily confused with parameter names.
(eg. `char * __restrict' instead of `char *__restrict')
Submitted by: bde (mostly)
1f81bb0282