Batch of small 64-bit/long double/large file support tweaks:

- scan for LDBL_DIG
- from DBL_DIG and LDBL_DIG select NV_DIG
- introduce IVSIZE, UVSIZE, NVSIZE
- introduce IV_DIG
- remove stdio64
- AIX uses `oslevel` when others use `uname -r`
- already AIX 4.2 goes 64-bit
- in HP-UX require the 64-bit libc, just the directory isn't enough
- group ids are not NVs
- #undef USE_LONG_DOUBLE if long double is no better than double
- introduce NV_WITHIN_*() and IV_FITS_IN_IV
- mention large file support in perldelta
- introduce quad TOPpin' and POPpin'
- the svcat... buffer was tiny for printing quads in %b
- fix the multiplication test in 64bit.t
- try to make VMS to comply with all this removal and "introducal"
  of symbols

p4raw-id: //depot/cfgperl@3995

1 files changed, 8 insertions, 6 deletions

diff --git a/config_h.SH b/config_h.SH
index 2edfb03535..e38e455b85 100644
--- a/config_h.SH
+++ b/config_h.SH
@@ -2213,6 +2213,14 @@ sed <<!GROK!THIS! >config.h -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un-
  */
 #$d_hasmntopt HAS_HASMNTOPT		/**/
 
+/* HAS_LDBL_DIG:
+ *	This symbol, if defined, indicates that this system's <float.h>
+ *	or <limits.h> defines the symbol LDBL_DIG, which is the number
+ *	of significant digits in a long double precision number. Unlike
+ *	for DBL_DIG, there's no good guess for LDBL_DIG if it is undefined.
+ */
+#$d_ldbl_dig HAS_LDBL_DIG 	/* */
+
 /* HAS_MADVISE:
  *	This symbol, if defined, indicates that the madvise system call is
  *	available to map a file into memory.
@@ -2428,12 +2436,6 @@ sed <<!GROK!THIS! >config.h -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un-
  */
 #define STARTPERL "$startperl"		/**/
 
-/* HAS_FSETPOS64:
- *	This symbol, if defined, indicates that the fsetpos64 routine is
- *	available to setpos files larger than 2 gigabytes.
- */
-#$d_fsetpos64   HAS_FSETPOS64	/**/
-
 /* HAS_STDIO_STREAM_ARRAY:
  *	This symbol, if defined, tells that there is an array
  *	holding the stdio streams.