autotest buglet/AIX awk limitation

[Ralf Wildenhues]

CVS HEAD of autoconf gives me on AIX:

| cd $top_builddir/tests
| ./testsuite --list
| GNU Autoconf 2.59c test suite test groups:
| 
|  NUM: FILE-NAME:LINE     TEST-GROUP-NAME
|       KEYWORDS
| 
|  awk: The string or regular expression beginning with
|         the characters "^(banner-1" cannot contain more than 399 bytes.
|  The source line is 2.
|  The error context is
|                  >>> 
-7|72|73|74|75|76|banner-8|77|78|79|80|banner-9|81|82|83|banner-10|84|85|86|87|88|89|90|banner-11|91|92|93|94|95|96|97|98|99|100|101|
 <<< 
102|103|banner-12|104|105|banner-13|106|107|108|109|110|111|112|banner-14|113|114|115|116|117|118|119|120|121|122|123|124|125|126|127|128|129|130|131|132|133|134|banner-15|135|136|137|138|139|140|141|142|143|144|145|146|147|148|149|150|151|banner-16|152|banner-17|153|154|155|156|157|158|159|160|161|162|163|164|165|166|banner-18|167|168|169|170|171|172|173|174|175|176|177|178|banner-19|179|180|181|182|183|184|185|186|187|banner-20|188|189|190|191|192|193|194|195|196|197|banner-21|198|199|200|201|202|203|204|205|206|207|208|209|210|211|212|213|214|215|216|217|218|219|220|221|222|223|224|banner-22|225|banner-23|226|banner-24|227)$/)
 next }
|  syntax error The source line is 2.
|  awk: The statement cannot be correctly parsed.
|  The source line is 2.
|         awk: There is an extra ) character.


I guess an update of the `Portable Shell' section on awk could help as
well.  Test 68 (multiline substitution) succeeds, though.  :)

$ ./config.guess
powerpc-ibm-aix5.1.0.0

Regards,
Ralf