Patches for flex 2.5.25 C compatibility and lint compatibility

[Bruce Lilly]

Attached are two patches for flex 2.5.25.

compat.patch addresses C type issues related to vaious revisions
of ANSI C and K&R C.  Both "long long" and int64_t (and uint64_t)
were introduced with C99, so appropriate typedefs are used in the
C99 preprocessor branch in flexint.h.  The typedefs were removed
from the non-64-bit, non-C++ branch since "long long" is an error
prior to C99.

lint.patch revises the "/* fall through */" comment to "/*FALLTHROUGH*/"
which is recognized by lint and lclint (though the latter squawks
about it not being the lclint proprietary format).

Both patches have been tested on GNU/Linux (SuSE 8.0/gcc 2.95.3) and
UWIN 3.1 (MSVC++ 6.0 SP5).

compat.patch does not address the fact that the [u]intN_t types are
optional in C99; the typedefs in the C99 branch could be changed
to the required [u]int_leastN_t C99 types.

*** flexint.h.orig      Sun Dec  8 15:39:24 2002
--- flexint.h   Sun Dec  8 15:42:28 2002
***************
*** 13,34 ****
  typedef uint16_t flex_uint16_t;
  typedef int32_t flex_int32_t;
  typedef uint32_t flex_uint32_t;
  #else
  typedef signed char flex_int8_t;
  typedef short int flex_int16_t;
  typedef int flex_int32_t;
  # if __WORDSIZE == 64 || defined __arch64__ || defined __cplusplus
  typedef long int flex_int64_t;
- # else
- typedef long long int flex_int64_t;
  # endif
  typedef unsigned char flex_uint8_t; 
  typedef unsigned short int flex_uint16_t;
  typedef unsigned int flex_uint32_t;
  #if __WORDSIZE == 64 || defined __arch64__ || defined __cplusplus
  typedef unsigned long int flex_uint64_t;
- #else
- typedef unsigned long long int flex_uint64_t;
  #endif
  #endif /* ! C99 */
  
--- 13,32 ----
  typedef uint16_t flex_uint16_t;
  typedef int32_t flex_int32_t;
  typedef uint32_t flex_uint32_t;
+ typedef int64_t flex_int64_t;
+ typedef uint64_t flex_uint64_t;
  #else
  typedef signed char flex_int8_t;
  typedef short int flex_int16_t;
  typedef int flex_int32_t;
  # if __WORDSIZE == 64 || defined __arch64__ || defined __cplusplus
  typedef long int flex_int64_t;
  # endif
  typedef unsigned char flex_uint8_t; 
  typedef unsigned short int flex_uint16_t;
  typedef unsigned int flex_uint32_t;
  #if __WORDSIZE == 64 || defined __arch64__ || defined __cplusplus
  typedef unsigned long int flex_uint64_t;
  #endif
  #endif /* ! C99 */
  

*** flex.skl.orig       Sun Dec  8 15:46:41 2002
--- flex.skl    Sun Dec  8 15:46:56 2002
***************
*** 1472,1478 ****
                                        /* Reset buffer status. */
                                        yyrestart( yyin YY_CALL_LAST_ARG);
  
!                                       /* fall through */
  
                                case EOB_ACT_END_OF_FILE:
                                        {
--- 1472,1478 ----
                                        /* Reset buffer status. */
                                        yyrestart( yyin YY_CALL_LAST_ARG);
  
!                                       /*FALLTHROUGH*/
  
                                case EOB_ACT_END_OF_FILE:
                                        {