pre0.99-20 change 89: Added get_syntax_flags, which is used to for the case-sensitivity of tag searches.

Also, a slightly incorrect mask was be applied to the buffer syntax flag bits.
This changed corrects the state of "comment-to-end-of-line" comments.
pre0.99-20 change 90: A buffer-local variable may be used to specify what is whitespace when setting the selective-display.
pre0.99-20 change 91: The *scratch* buffer's mode was not getting fully set.
pre0.99-20 change 92: Fixed a typo in src/Makefile.in (misc.o -> misc.h)