Improve the check for departures from C89, and fix the departures

I found.
* Makefile.maint (my-distcheck): Also check for C89 compatibility
as best we can with GCC.
* src/stat.c (PRINTF_OPTION): Omit comma before } in enum
declaration; C89 doesn't allow this.
* src/dcgen: Don't generate string literals longer than
what C89 requires support for.
* src/cut.c (usage): Don't use string literals longer than
what C89 requires support for.
* src/date.c (usage): Likewise.
* src/dd.c (usage): Likewise.
* src/du.c (usage): Likewise.
* src/ls.c (usage): Likewise.
* src/od.c (usage): Likewise.
* src/readlink.c (usage): Likewise.
* src/seq.c (usage): Likewise.
* src/shred.c (usage): Likewise.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/seq.c b/src/seq.c
index 997fd730d..59dd318d4 100644
--- a/src/seq.c
+++ b/src/seq.c
@@ -92,6 +92,8 @@ omitted INCREMENT defaults to 1 even when LAST is smaller than FIRST.\n\
 FIRST, INCREMENT, and LAST are interpreted as floating point values.\n\
 INCREMENT is usually positive if FIRST is smaller than LAST, and\n\
 INCREMENT is usually negative if FIRST is greater than LAST.\n\
+"), stdout);
+      fputs (_("\
 FORMAT must be suitable for printing one argument of type `double';\n\
 it defaults to %.PRECf if FIRST, INCREMENT, and LAST are all fixed point\n\
 decimal numbers with maximum precision PREC, and to %g otherwise.\n\