AIX 4.3.3 IBM C compiler patch for m4-1.4.8

[Albert Chin]

The IBM C compiler on  AIX 4.3.3 (v6) doesn't like signed bit types:
  gmake[1]: Entering directory `/opt/build/m4-1.4.8/src'
  xlc    -I../lib -I../lib   -O2 -qro -qroconst -qmaxmem=-1 -qarch=com -c m4.c
  "m4.h", line 383.3: 1506-009 (S) Bit-field gnu_extension must be of type 
signed int, unsigned int or int.
  "m4.h", line 384.3: 1506-009 (S) Bit-field groks_macro_args must be of type 
signed int, unsigned int or int.
  "m4.h", line 385.3: 1506-009 (S) Bit-field blind_if_no_args must be of type 
signed int, unsigned int or int.
  gmake[1]: *** [m4.o] Error 1

Patch attached.

-- 
albert chin (address@hidden)

tww.patch
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