dfa-match-aux build error

[Tom G. Christensen]

Hello,

I got an error building the dfa-match-aux test program on Solaris 9:
gcc -std=gnu11  -g -O2  -L/usr/tgcware/lib -R/usr/tgcware/lib -o 
dfa-match-aux dfa-match-aux.o ../gllib/libgnu.a -lm   -lm     -lm    -lm 
 -lm  -lm
Undefined                       first referenced
 symbol                             in file
libintl_gettext                     ../gllib/libgnu.a(dfa.o)
ld: fatal: Symbol referencing errors. No output written to dfa-match-aux
collect2: error: ld returned 1 exit status
make[4]: *** [dfa-match-aux] Error 1

I looks like an error in modules/dfa-tests, the LDADD line seems not to 
have been updated from where it was copied from (stat-tests).

Correcting that and running the test shows an error in the dfa-match.sh 
script:
PASS: dfa-invalid-char-class.sh
./dfa-match.sh: line 24: require_timeout_: command not found
PASS: dfa-match.sh

Additionally I was unable to build the dfa module without explicitly 
adding the isblank module to the testdir since isblank is missing on 
Solaris < 10.

-tgc