[svn-r19166] Bug fix: 1917.

Description:
test/big incorrectly determined not able to write files larger than 2GB and
skipped the SEC2 and STDIO driver tests.  The reason was because it was using
off_t while the SEC2 driver is using lseek64 which expects off64_t type.

Solution:
Created a new HDoff_t which is set to off_t or off64_t or other appropriate
type depending on which of lseek or lseek64 is available. Changed SEC2 file
driver and the big test to use this common definition.

Tested:
In BP (AIX), using --enable and --disable-largefile, for both 32 and 64 bits
modes.  Did not do h5committest because: 1. the error was exposed in the remote
BP machine; 2. the change is trivial.

1 files changed, 4 insertions, 5 deletions

diff --git a/test/big.c b/test/big.c
index dde9d7a..8d65559 100644
--- a/test/big.c
+++ b/test/big.c
@@ -32,8 +32,7 @@ const char *FILENAME[] = {
 #define WRT_SIZE	4*1024
 #define FAMILY_SIZE	1024*1024*1024
 
-/* Define big file as 2GB */
-#define BIG_FILE (off_t)0x80000000UL
+#define GB (HDoff_t)0x40000000L
 
 #define MAX_TRIES	100
 
@@ -165,15 +164,15 @@ supports_big(void)
     if ((fd=HDopen("y.h5", O_RDWR|O_TRUNC|O_CREAT, 0666)) < 0) return 0;
 
     /* Write a few bytes at 2GB */
-    if (HDlseek(fd, BIG_FILE, SEEK_SET)!=BIG_FILE) return 0;
+    if (HDlseek(fd, 2*GB, SEEK_SET)!=2*GB) return 0;
     if (5!=HDwrite(fd, "hello", (size_t)5)) return 0;
 
     /* Write a few bytes at 4GB */
-    if (HDlseek(fd, 2*BIG_FILE, SEEK_SET) != 2*BIG_FILE) return 0;
+    if (HDlseek(fd, 4*GB, SEEK_SET) != 4*GB) return 0;
     if (5!=HDwrite(fd, "hello", (size_t)5)) return 0;
 
     if (HDclose(fd) < 0) return 0;
-    if (HDunlink("y.h5") < 0) return 0;
+    if (HDremove("y.h5") < 0) return 0;
 
     return (1);
 }