test expressions under Solaris

[andreas . leipelt]

Hi, under Solaris 2.8 i get the error message

  libtool: test: argument expected

with libtool 1.4.2 and 1.4d.
I found out, that a lot of expressions of the form

i)   test "$a" = b

must be replaced with

ii)  test "X$a" = Xb

This problem of 'test' with empty left arguments is well known. 
I suggest the replacement of all expessions i) with those of the
form ii).
After changing all expressions like suggested , all worked fine 
and under Linux some warnings concerning 'test'
disappeared too.

bye