AIX libstdc++-v3 breakage on gcc-3.0 branch

[David Edelsohn]

	The import of libtool 1.4a 1.641.2.254 has broken libstdc++-v3 on
the gcc-3.0 branch.

	The fix of the quoting typo when defining

        allow_undefined_flag='${wl}-berok'

now means that there is no space in archive_expsym_cmds:

${wl}-bnoentry${allow_undefined_flag}

which turns into the following when invoking ld:

-Wl,-bnoentry${wl}-berok

ld: 0706-014 The -b noentry-Wl option is not recognized.


	I presume that a space should be added in the definition of
archive_expsym_cmds? 

David