lib/Makefile: use CC, add bcheck to libtcc1.a

Also:
- fix "make tcc_p" (profiling version)
- remove old gcc flags:
  -mpreferred-stack-boundary=2 -march=i386 -falign-functions=0
- remove test "hello" for Darwin (cannot compile to file)

tests/Makefile

@@ -26,7 +26,7 @@ ifdef CONFIG_WIN32
  TESTS := $(filter-out test3,$(TESTS))
 endif
 ifeq ($(TARGETOS),Darwin)
- TESTS := $(filter-out test3 btest,$(TESTS))
+ TESTS := $(filter-out hello test3 btest,$(TESTS))
 endif
 
 ifdef DISABLE_STATIC