add pic_equal_p
add pic_assoc
s/PICCONF/config/g
update submodules
add pic_parse
s/DEFINE_MATH_PRED/DEFINE_ARITH_CMP/g
define arithmetic operators as c functions
execute winded handlers when exit is called
update README
add yet another debug print
add hygienic `case` syntax
add hygienic `or` syntax
[bugfix] case and or should be declared by ir-macro-transformer
ir-macro-transformer was broken
fix ir-macro-transformer
Merge branch 'master' into libraries

Conflicts:
	src/macro.c
	src/pair.c
debug print might cause segv
import and export take multiple spec in a time
define-syntax is now capable of takeing a synclo object at the position
of the syntax name
[bugfix] avoid auxiliary keywords such as unquote or unquote-splicing
from being renamed