[bug-gettext] use configure shell in gettext tool tests

[Roumen Petrov]

Hello,

For performance reasons I use ksh to configure build system, i.e. 
CONFIG_SHELL=/bin/ksh .../configure  ....

Generated libtool script  is optimised for specified shell and for 
instance use build in print command. The default user shell ( bash ) 
does not support this command and some test that use libtool fail. For 
instance lang-c .

Proposed patch "0004-export-SHELL-for-tests.patch.gz" export SHELL 
instead CONFIG_SHELL .
Note that makefile macro SHELL is set to the value of CONFIG_SHELL 
specified during configuration, i.e. /bin/ksh in my case.

Regards,
Roumen

0004-export-SHELL-for-tests.patch.gz
Description: GNU Zip compressed data