Rename and share `ALIGN' macro from _UCD_internal.h
Rename the `ALIGN' macro to `UNW_ALIGN', and move it from
`_UCD_internal.h' to `libunwind_i.h' so that we can share it with the
mempool code. `ALIGN' was clashing with system headers on FreeBSD:
In file included from src/coredump/_UCD_access_reg_freebsd.c:26:
src/coredump/_UCD_internal.h:102:1: warning: "ALIGN" redefined
In file included from /usr/include/sys/param.h:115,
from src/coredump/_UCD_lib.h:52,
from src/coredump/_UCD_access_reg_freebsd.c:24:
/usr/include/machine/param.h:79:1: warning: this is the location of the previous definition
diff --git a/include/libunwind_i.h b/include/libunwind_i.h
index bdd3f46..91439b1 100644
--- a/include/libunwind_i.h
+++ b/include/libunwind_i.h
@@ -352,4 +352,6 @@
# define tdep_get_func_addr(as,addr,v) (*(v) = addr, 0)
#endif
+#define UNW_ALIGN(x,a) (((x)+(a)-1UL)&~((a)-1UL))
+
#endif /* libunwind_i_h */